Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Exam number 2: Chọn các giá trị theo thứ tự tăng dần:.. Exam number 3: Đi tìm kho báu:.[r]
(1)Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG (05-9-2015) Exam number 1: Cóc vàng tài ba 1/ 485 5464 8446 8500 2/ 28 14 3/ 4/ (2) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet 5/ 6/ 23 33 46 53 7/ (3) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet 8/ 9/ 48 10/ 120 150 100 130 Exam number 2: Đỉnh núi trí tuệ 1/ 2/ 3/ 4/ 5/ 6/ 7/ (4) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet 8/ 9/ 10/ 11/ 12/ 13/ 14/ 15/ 16/ 17/ 18/ 19/ (5) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet 20/ Exam number 3: Sắp xếp …………………………………………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………… ………………………………………………… …………………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………… ………………………………………………… …………………… …………………………………………………….……………………………………………………………………………………………… (6) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG (28-9-2015) Họ và tên: ………………………………………………………………………………………………… Exam number 1: Tìm cặp nhau: = …………………………… ; = ……………………………… ; =…………………………………; =……………………….….…………; =……………………; =……………….……….…………………; =…………………………………; =………………………; =…………………………; =……………………………………… (7) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet (8) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Exam number 3: Vượt chướng ngại vật: Question / Question / Question / 440 420 4200 4400 Question / (9) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question / (10) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG (12-10-2015) Họ và tên: ………………………………………………………………………………………………… 10 (11) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Exam number 2: Chọn các giá trị theo thứ tự tăng dần: Exam number 3: Đi tìm kho báu: a/ 1/40 m ; b/ 1/400 m ; c/ 1/4000 cm ; d/ 1/40000 m a/ dm ; b/ 30 cm ; c/ mm ; d/ cm a/ 20 g ; b/ 200 g ; c/ 2000 g ; d/ 20000g ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG (26-10-2015) - Họ và tên: ………………………………………………………………………………………………… Exam number 1: Cóc vàng tài ba: Question : a/ ; Question : b/ ; c/ ; d/ 11 (12) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet a/ 0.7 ; b/ 0.6 Question : a/ 12 ; ; c/ 0.8 b/ 1.2 ; Question : a/ 0.3 ; b/ 0.5 ; c/ 0.12 ; ; d/ 0.9 d/ 0.012 c/ 0.4 ; d/ 0.2 Question : a/ ; Question : a/ 3.6 ; Question : a/ 0.025 ; b/ 225 ; 100 c/ b/ 6.3 ; 25 ; 100 c/ 3.06 ; b/ 0.25 ; c/ 2500 ; d/ 25 10 d/ 6.03 d/ 2.5 Question : a/ ; b/ c/ ; d/ Question : a/ 287 ; b/ 28 ; c/ 27 ; ; d/ 2876 12 (13) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question 10 : a/ ; b/ ; c/ ; d/ Exam number 2: Tìm cặp nhau: …………………………………………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………… ………………………………………………… 13 (14) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet 14 (15) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG (09-11-2015) Họ và tên: ………………………………………………………………………………………………… Bài 1: Chọn các giá trị theo thứ tự tăng dần: …………………………………………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………………………………… Examnumber 2: 15 (16) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Examnumber 3: Đi tìm kho báu: Câu : a/ 250 ; b/ 0.025 ; Câu : a/ 200 ; b/ 200000 ; c/ 2000 ; d/ 20000 Câu : a/ 0.325 ; b/ 325 ; c/ 3250 ; d/ 32.5 b/ 3.4 ; c/ 0.34 ; d/ 0.034 b/ 0.503 ; c/ 503 ; d/ 5030 Câu : a/ 34 ; Câu : a/ 50.3 ; c/ 2.5 ; d/ 0.25 Câu : a/ ; b/ ; c/ ; d/ a/ ; b/ ; c/ ; d/ a/ 55 ; b/ 27 ; c/ 26 ; d/ 28 Câu : Câu : Câu : 16 (17) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet a/ 55 ; b/ 27 ; c/ 26 ; d/ 28 a/ 25 ; b/ 47 ; c/ 24 ; d/ 23 Câu 10 : 17 (18) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG Họ và tên: ………………………………………………………………………………………………… Exam number 1: Choose consecutive cells which have the same or equal value (Tìm cặp nhau) Answer: (1) = .; (2) = .; (3) = ; (6) = .; (7) = .; (9) = ; (11) = .; (13) = ; (14) = .; (16) = Nhập số thứ tự các ô vào chỗ ( ) cho thích hợp để dãy số tăng dần Exam number 2: Vượt chướng ngại vật Question 2.1: The missing number is a 5.9 b 8.3 c 6.3 d 3.8 Question 2.2: Find the value of y such that 19.5 + y = 32.6 Answer: y = 18 (19) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet a 52.1 b 14.1 c 51.1 d 13.1 Question 2.3: The value of P is a 3.7 b 1.2 c 1.7 d 4.2 Question 2.4: The value of Q is a 0.6 b 1.1 c 1.0 b 0.7 Question 2.5: Calculate: 1.34 + 2.34 + 3.34 + + 20.34 = a 205.96 b 195.12 c 227.64 d 216.8 Question 2.6: Rule: Add 13.85 The missing number is 19 (20) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet a 54.44 b 53.44 c 80.14 d 81.14 Question 2.7: Rule: Substract 15.24 The missing number is a 49.42 b 19.84 c 48.52 d 18.94 Question 2.8: Which of following decimals is equal to 3/8? a 0.35 b 0.375 c 0.3 d 0.357 Question 2.9: Write these numbers in standard form: 21.3 = 20 + + 0.3 Which of following is true? a 149.34 = 100 + 40 + + 0.34 b 127.06 = 120 + + 0.06 c 105.9 = 100 + + 0.9 d 280.2 = 200 + + 0.2 Question 2.10: The value of N is a 4.1 b 3.5 20 (21) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet c 3.8 d 4.4 Question 2.11: 10 + + = 18.06 The missing number is a 0.06 b 0.8 c 0.08 b 0.6 Question 2.12: Find the value of a if Answer: a = a b c d Exam number 3: Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part Example: 0.5) Question 3.1: If n = 23.54 then n x = Write your answer by decimal in the simplest form Question 3.2: If a x b = 42.63 then b x a = Question 3.3: 21 (22) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet The missing decimal number is Question 3.4: Multiply: 3.56 x = Write your answer by decimal in the simplest form Question 3.5: This table shows the weights of Peter's three dogs The product of the combined weight of Shadow and Josie and the weight of Brody is kg Question 3.6: If a = 2.4; b = 5.6 and c = 7.6 then (a + b) x c = Write your answer by decimal in the simplest form Question 3.7: The cost of kilograms of oranges is 2.31 dollars What is the cost of 12 kilograms of oranges? Answer: dollars Question 3.8: Calculate: 0.4 x 8.4 x 2.5 = Fill in the blank with the suitable sign (>, =, <) 22 (23) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question 3.9: Compare: M = 25.36 x 25.34 and P = 25.35 x 25.35 Answer: M P Question 3.10: Compare: A = 26.26 x 4949.49 and B = 49.49 x 2626.26 Answer: A B 23 (24) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG Họ và tên: ………………………………………………………………………………………………… Exam number 1: Sắp xếp các giá trị theo thứ tự tăng dần Answer: (4) < < < < < Nhập số thứ tự các ô vào chỗ ( ) cho thích hợp để dãy số tăng dần Exam number 2: Cóc vàng tài ba Question 2.1: Calculate: 0.18 x 400 = a 7.2 b 0.72 c 720 d 72 Question 2.2: Calculate: 6.3 x 6.4 + 3.6 x 6.3 = a 63 b 39 c 36 d 64 Question 2.3: If X x 3.7 = 17.75 then 7.4 x X = 24 (25) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet a 35.25 b 35.24 c 34.52 d 35.52 Question 2.4: Find the value of X such that 9.6 x X = 6.4 x 7.2 Answer: X = a 5.6 b 5.4 c 4.2 d 4.8 Question 2.5: The value of the digit in 238.159 is a 0.5 b 0.05 c d 0.005 Question 2.6: If 15.498 < 15.4xy then y = a x = b y = c y = d y = Question 2.7: Find the value of X such that X x 3.6 = 18.72 a 4.7 b 5.2 c 5.7 d 4.2 Question 2.8: 25 (26) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Write as a decimal number? a 8.75 b 8.25 c 8.55 d 8.5 Question 2.9: James buys Harry Potter books at $200.25 each What is the total cost? a $1000.25 b $1001.25 c $1001 d $1001.1 Question 2.10: Charlies buys two pairs of shoes for $15.75 each He gives the clerk $50.00 How much change should Charlie receive? a $18.5 b $31.5 c $34.25 d $15.75 Question 2.11: The value of 2.56 x 4.15 + 7.623 is a 18.427 b 18.274 c 18.472 d 18.247 Question 2.12: If you can ride 7.35km in 15 minutes then how far can you ride in hours? a 44.1km b 29.4km c 14.7km d 58.8km Question 2.13: 26 (27) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Four friends eating four pizzas that have same size John has 2/5 left, James has 1/3 left, Jacob has 1/4 left and Billy has 3/5 left Who eats the most amount of pizza? a Billy b James c Jacob d John Question 2.14: The table shows the cost of hamburgers: If the pattern continues then the cost of hamburgers is a $13.75 b $13.25 c $12.75 d $12.25 Question 2.15: Mary calculates the sum of the digits that she sees on her clock (example: If the clock shows 16:35 then she gets 15) What is the biggest sum she can get if the clock is a 24-hour cock? a 24 b 35 c Another answer d 19 Question 2.16: In the month, there are five Fridays This month could not have a Five Sundays b Five Wednesdays C Five Tuesdays d Five Thursdays Exam number 3: Đỉnh núi trí tuệ Question 3.1: % of 120 is 138 27 (28) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question 3.2: % of 256 is 64 Question 3.3: Find the value of X such that: 6.5 : X = 6.5 x X Answer: X = Question 3.4: What percentage of the circle is shaded? Answer: % Question 3.5: Find the following percentage: 30% of 22 is Write your answer by natural number or decimal in the simplest form Question 3.6: Calculate the percentage: 70% of 48 is Write your answer by natural number of decimal in the simplest form Question 3.7: Complete the table below: The missing number is Question 3.8: A clothing shop is having a 40% off sale How much would a shopper have to pay for a shirt with its original price is $20? Answer: $ 28 (29) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question 3.9: The original price of an umbrella is $15 What is its price after two times 10% discount? Answer: $ Write your answer by decimal in the simplest form Question 3.10: How many pairs of two - digit natural numbers have a difference equal to 40? Answer: pairs 29 (30) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG Họ và tên: ………………………………………………………………………………………………… Exam number 1: Đi tìm kho báu Question 1: There are 40 students in Mrs Brown's class 25% of her students received a B on the test How many students received a B? a 10 b 12 c 18 d 20 Question 2: What is the product of 3.05 and 2.8? a 8.54 b 8.056 c 8.56 d 8.054 Question 3: A clothing shop is having a 40% off sale How much would Jane have to pay for a $30 sweater with a 40% discount? a $18 b $20 c $50 d $13 Question 4: If a pen costs $1.75 and an eraser costs $0.85, which of the following is the cost of 10 erasers and pens? a $21.75 b $26 c $18.75 d $17.25 30 (31) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question 5: If the area of the rectangle ABCD is 60cm2 then the area of the trapezoid MNCD is cm2 a 48 b 50 c 45 d 54 Exam number 2: Tìm cặp Answer: (1) = ; (2) = .; (3) = ; (5) = ; (7) = ; (8) = .; (9) = ; (11) = ; (15) = ; (16) = Nhập số thứ tự các ô vào chỗ chấm để các cặp giá trị Exam number 3: Fill in the blank with the suitable number 31 (32) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question The length of each edge of a cube is cm The surface area of the cube, in cm2, is Question 2: At the beginning of the summer, Bob was 140 cm tall At the end of the summer, he measured his height again and discovered that it had increased by 5% Measured in cm, what was his height at the end of summer? Answer: cm Question 3: The number of centimetres in 7.05 metres is Question 4: Bella scores on six of her eight pictures The percentage of pictures that she does not score on is % Question 5: A bag contains green marbles and red marbles only If the ratio of the number of green marbles to the number of red marbles is 1:4 then % of marbles are green Question 6: How many even numbers between and 100 are divisible by 5? Answer: There are numbers Question 7: Alice is going to the store One third of the way to the store, she stops to talk with Kelly She then continues for km and reaches the store How many kilometres does she travel? Answer: km Question 8: How many three-digit numbers are exactly 19 more than a two-digit number? Answer: numbers Question 9: 32 (33) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet In the 3×3 table shown, the numbers 2, and are placed so that each number occurs only once in each row and only once in each column The value of M + N is Question 10: How many different 3-digit whole numbers can be formed using the digits 4, 5, and 8, assuming that no digit can be repeated in a number? Answer: There are numbers 33 (34) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG Họ và tên: ………………………………………………………………………………………………… Exam number 1: Vượt chướng ngại vật Question 1: 1,83 + = The missing number is Question 2: The volume of the cube below is ……….cm3 Question 3: After running 20% of a race, Bob had run 25m How long was the race, in metres? Answer: …………… m Question 4: Alice are going to buy sugar for her cooking class She needs to have 1/6 kg of sugar for every student in her class There are 18 students in her class How many kilograms of sugar should Alice buy? Answer: ………… Kg Question 5: Alice’s mathematics exam had 30 algebra questions and 50 geometry questions, each worth mark She got 70% of the algebra questions correct, and 60% of her questions correct How many geometry questions did she answer correctly? Answer: ………… questions Exam number 2: Fill in the blank with the suitable number Question 1: Bob roller skates with a constant speed of 14 miles per hour How far can he travel in hour? Answer: miles 34 (35) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question 2: Emily rides her bike with a constant speed of 12km/h How far can she travel in hours? Answer: .km Question 3: Jack rides his horse with a constant speed of 12 miles per hour How far can he travel in hours? Answer: miles Question 4: An airplane flies with a constant speed of 810 miles per hour How far can it travel in hours? Answer: miles Question 5: John drove from Town A to Town B in hours His average speed for the first 3,5 hours was 64km/h His average speed for the last 1,5 hours was 60km/h What was the total distance he traveled? Answer: .km Question 6: A car traveled at 50km/h for hours and at 60km/h for hours What is the car’s average speed? Answer: km/h Question 7: The distance between John’s home and the park is 3000m John walked from his home to the park at a speed of 100m per minute and then walked back home at a speed of 150m per minute What is the John’s average speed in meter per minute? Answer: meter per minute Question 8: Bob drove from City P to City Q He traveled the first 36km at an average speed of 54km/h He traveled the remaining 96km at a average speed of 72km/h Find his average speed for the whole trip Answer: km/h Question 9: 35 (36) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Peter and Jacob were running Both of them run with their constant speeds They started at the same time and the same place When Jacob reached the finishing line, Peter had only run of what Jacob had run Jacob’s speed is 75m/min (metre per minute) faster than Peter What was Peter’s speed in m/min? Answer: m/min Question 10: A train crosses a tree in 10 second and a bridge 225m long in 25 second Find the length of the train Answer: m Exam number 3: Cóc vàng tài ba Question 1: The number of centimetres in 2,5 metres is …………… a 0,025 b 0,25 c 25 d 250 Question 2: You walk miles with your dog in only 40 minutes Your average speed is …………… a 0,2 mile in per minute b 0,5 mile in per minute c 0,02 mile in per minute d 0,05 mile in per minute Question 3: Susan wants to divide 35,5 kg sugar in small bags If each bag holds 0,5kg, how many bags are needed? a 70 b 71 c 36 d 35 Question 4: 36 (37) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet In the diagram, the percentage of small squares that are shaded is …………… a 36% b 9% c 24% d 25% Question 5: If the numbers: 2/5; 41% and 0,401 are arranged from largest to smallest, the correct order is ………… a 2/5; 0,401; 41% b 0,401; 2/5; 41% c 41%; 0,401; 2/5 d 41%; 2/5; 0,401 Question 6: Charlie and Lily go on a 24 km run They both usually run at km/h If Charlie runs at 2/3 his usual running speed, and Lily runs at 4/3 times her usual speed, how many more hours does it take Charlie to complete the run than it takes Lily to complete the run? a b c d Question 7: A box contains 21 disks, each coloured red, blue and green There are twice as many green disks as red disks, and half as many blue as red How many disks are red? a b 12 c d Question 8: 37 (38) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet The results of a survey of the hair colour of 500 people are shown in this circle graph How many people have blonde hair? a 300 b 150 c 250 d 200 Question 9: a b c d Question 10: Each face of a cube is painted with exactly one colour What is the smallest number of colours needed to paint a cube so that no two faces that share an edge are the same colour? a b c d 38 (39) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016 LỚP – VÒNG 10 Họ và tên: ………………………………………………………………………………………………… Exam number 1: Fill in the blank with the suitable number Question 1: 0.6 hour = minutes Question 2: 12 hours 24 minutes x = hours (Write your answer by decimal in the simplest form) Question 3: 51 hours = days (Write your answer by decimal in the simplest form) Question 4: minutes 27 seconds : = seconds Question 5: How fast is Anna going if she runs miles in the park in only hours? Answer: mile/hour Question 6: How fast is Jack going if the train he is on travels 20 miles in just minutes? Answer: miles/hour Question 7: How far will Mary travel if she rides her motorbike for 24 minutes at a speed of 75 miles/hour? Answer: miles Question 8: Yesterday Peter roller skated for 2.5 hours at a speed of km/h How many kilometers did he skate? Answer: km 39 (40) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question 9: The area of a rectangle ABCD is 56cm2 Given a random point E inside of ABCD Find the total area of triangles AED and BEC Answer: cm2 Question 10: The distance between trees is 300 meters It will take a bird 30 seconds to fly between these trees How fast is the bird in kilometer per hour? Answer: km/h Exam number 2: Cóc vàng tài ba Question 1: Which of following is correct? a 100 + 64 = 104 + 60 b 100 + 64 = 140 + c 100 + 64 = 106 + 40 d 100 + 64 = 10 + 64 Question 2: Write as a decimal The result is a 23,05 b 23,0005 c 23,005 d 235 Question 3: Find the value of x such that x + 3/7 = 26/21 Answer: x = a 7/21 b 23/21 c 23/14 d 17/21 40 (41) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet Question 4: Calculate: 23,61 x 4,23 = a 9987,03 b 92,1403 c 99,8703 d 9214,03 Question 5: This shape is made of several small cubes Find the surface area of the shape, if each side of small cube is 2cm long a 96cm2 b 104cm2 c 208cm2 d 144cm2 Question 6: In a school librabry, there are 101000 English books, 92683 Math books and 216094 books of other subjects How many books are there in the library? a 409777 books b 308777 books c 193683 books d 409667 books Question 7: Find the next figure a 41 (42) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet b c d Question 8: What is the difference between the sum of the first 2016 even natural numbersand the first 2016 odd natural numbers? a 4031 b 2016 c 4030 d 2015 Question 9: Jack buys sofas from a wholesale market for $3750, and then he sells all of them at a loss of 4% How much money did he sell each sofa for? a $3900 b $156 c $3600 d $144 Question 10: A square picture was cut along the lines into pieces Which of the following shapes below was missing piece? a 42 (43) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet b c d Exam number 3: Sắp xếp các giá trị theo thứ tự tăng dần Answer: (3) < < < < < Nhập số thứ tự các ô vào chỗ chấm để dãy số theo thứ tự tăng dần 43 (44) Tài liệu bồi dưỡng học sinh giải toán tiếng anh trên mạng Internet 44 (45)