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Math in my world 4 Math in my world 4 Math in my world Math in my world 4 4 Math in my world 4 Math in my world 4 Math in my world 4 Math in my world Math in my world 4 4 Math in my world 4 Math in my world 4 Math in my world 4 Math in my world Math in my world 4 4 Math in my world 4 Math in my world 4 Math in my world 4 Math in my world Math in my world 4 4 Math in my world 4
NGUYÊN TRƯỜN 'PHẠMTI Unit _#Digit NUmbers fe Unit Practice with 4-Digit NUmbers Unit3 Digit Numbers Unit Practice with 5-Digit Numbers Unit5 -Digit Numbers; Comparison Unit _Milion and Millions Period Unit Units of Mass Review J Seconds — Century _ Unit 34 Arithmetic Mean; Chart : 37 - Unit 10 Addition - Subtraction with Natural Numbers Review : - ‘ 40 43 Unit 11 Square Decimeter (dm?); Square Centimeter (cm?) 4é Unit 12 Acute Angle, Obtuse Angle and Staion Unit 13: -Divisibilily Rules for 2; Unit 14 Divisibility Rules for 3; Unit 15 Cumulative Practice ‘Review Angle 49 y ; 82 55 57 _58 mm Unit Hi, friends! Welcome to Math in My World Alin We will go on the journey to explore the world math and we will find out how interesting it is Before we start, let's see how well you know about math! Are you ready? Let's get started! Fill in the blanks Multiply Example: 9x8=72 We say: “Nine times eight equals seventy-two.” 30 M16 osgandvnteogsig x Bi nN N 3x9= lào 1l TỔ TA Ô = aapscrarenawssons : Choose and circle the correct answer Example: 64:8= (A)8 B.9 &ÿ We say: “Sixty-four divided by eight equals eight, so Eight is the correct answer and we choose and circle letter A.” Jd 72:8= A.8 B.9 C.7 bs 3224 = sewn A Ba? €.7 CG, 6359 = suena A B.9 G.7 d 42:ó= A.8 B.9 6.7 Long, Hoa and Oanh like apples very much Each of them can eat apples at a time How many apples can they eat at a time in all? Solution Each student can eat apples at a time The apples three students can eat at a time are: 3X3 = (apples) Answer: apples A class of 30 students went to the zoo by taxis Each students How many taxis did the students need? Solution taxi is for students The taxis for 30 students are: AnswWer: †oxis taxi can carry Nam practices playing the guitar for hours a day How many hours does he practice in days? Solution The hours he practices in days are: _ Khoi has tapes of his favorite songs Each tape has songs on it How many songs does Khoi have in all? Solution The songs Khoi has in all are: Chapter | a 4-Digit and 5-Digit Numbers Im lost \ Help me, please! What’ your address, kid? It’s one thousand | five hundred eleven Lac Long street, Miss Quan Thousơnd Write in number: 1,126 Hundred 1Ten One _ Write in words: One thousand one hundred twenty-six 10 Let's practice Read and match Eight thousand eight hundred ninety TUT Three thousand eight hundred eighty-one One thousand two hundred seventy-four Two thousand one hundred eighteen Seven thousand five hundred fifty-seven Three thousand three hundred sixty Four thousand four hundred fifty Place the value of the digit in the following numbers © ee Example: Place the value of seven thousand five hundred twenty-two: thousands hundreds tens ones ê ê e a Place the value of four thousand five hundred six: hundreds tens ones @ thousands 11 om eee eee thousands hundreds i tens ones c Place the value of nine thousand six hundred ninety-nine: thousands hundreds tens ones ] Fill in the box with >, < or = 3,352 | < | 3,358 We say: “Three thousand three hundred thousand three hundred fifty-eight.” a 2/22 b 4027 fifty-two is less than three 2,292 — 4/207 c — 2/202 2,202 d 7.575 7,557 me Example: