write your answer by decimal in simplest form Question 7: A rectangle has a length of 60 cm and a width of 30 cm.It is cut into2 identical squares,2 identical rectangles and a shaded sma[r]
(1)(2) (3) (4) (5) (6) (7) Exam number 319:37 Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part Example: 0.5) Baì thi số (8) Question 1: Given the triangle ABC and the bisector BD, AB=5cm, CB=7cm If the length of AD is 1cm less than the length of CD then the length of AC is Question 2: If then what is the value of ? cm Answer: The value of is Question 3: The area of a rectangle is 50 If its width is increasing to two times and its length is decreasing to four times then the area of the rectangle is Question 4: The equation Question 5: Find the value of has solution(s) such that Answer: Question 6: Find the solution of the equation Answer: The solution is Question 7: Find the value of such that Answer: Question 8: Three children: Mark, Tom, Andy ate 23 cookies altogether Tom ate more cookies than Andy, Mark What is the smallest possible number of cookies that Tom ate? Answer: The smallest possible number of cookies that Tom ate is Question 9: Find the maximum area of a triangle that has the length of two sides are Answer: The maximum area of the triangle is Fill in the blank with the suitable sign (>; =;<) Question 10: Given and To compare: Vòng Cấp tỉnh cookies and (9) Exam number 119:50 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 1: Three children want to take a group photo sitting in a row In how many ways can they arrange their sitting positions? Answer: There are ways Question 2: How many numbers between 10 to 3000 are multiple 7? Answer: There are Question 3: numbers Calculate: 366-363+360-357+354-351+…+300-297+294-291= Question 4: Given the point C on the segment AB such that the ratio of AC to CB is 3:7 Find the length of BC if the length of AB is 30 cm Answer: The length of BC is cm Question 5: Subtract 100 from times of a number A, the difference will be 68 more than times the value of A Find the value of A Answer: The value of A is Question 6: The figure below is made of squares of different sides (the length of sides are integer numbers) Find the perimeter of the figure if its area is Answer: The perimeter of the figure is Question 7: Find the maximum value of the expression cm Answer: The maximum value of B is Question 8: The perimeter of a rectangle is 34 cm If its length is increasing cm and its width is increasing cm then the area is increasing 80 Find the original area of the rectangle Answer: The original area of the rectangle is Question 9: Mark rides bicycle from his house to school with a speed of 15 km/h and arrives at the school 20 minutes late However, if he rides with 20 km/h, he would reach the school only minute late Find the distance between his house and the school Answer: The distance between his house and the school is km (10) Question 10: Given the triangle ABC, two bisectors BD and CE Find the length of the side BC if and the perimeter of ABC is 50 cm Answer: BC= cm (11) (12) (13) (14) (15) (16) Vòng 10 cấp quốc gia (17) (18) (19) (20) (21) (22) (23) (24) (25) Exam number 319:50 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 1: How many sides does a polygon have if the number of its diagonals is as triple as the number of its sides? Answer:The number of its sides is Question 2: Find the positive value of such that Answer: Question 3: is a root of the following equation: Find the greatest integer number such that the value of Answer:The greatest integer number Question 4: is The number of roots of the equation Question 5: Find the remainder when Answer:The remainder is Question 6: Given If is greaterthan the value of is is divided by then the value of the (26) sum is (write your answer by decimal in simplest form) Question 7: A rectangle has a length of 60 cm and a width of 30 cm.It is cut into2 identical squares,2 identical rectangles and a shaded small square Find the area of the shaded square Answer:The area of the shaded square is Question 8: If satisfy these equations is Question 9: The number of ordered pairs and where is Question 10: Let ABCD be the square with the side length that and then then the value of such that .If is a perfect square and lie on respectively such (27)