1 graphic conversion
Lesson 65438
Do it easily
1.√ × × √
√ × √ √
second kind
Do it easily
1( 1) 12 05, 12 15, 12 30, 60.
(2) A, B and C 。
(3)90,90,90,270。
Happy thinking ××××××
Introduction to lesson 3
Unit 1 Review
Do it easily
1. Rotate, translate or rotate, rotate, translate.
3.2, countless, 4,3, 1, 1.
4.( 1) b and c (2) b; (3) a; (4)B； (5) c
6.( 1)90,2;
(2) Clockwise, 90, upward, 2, e, counterclockwise, 90, downward, 2.
2 factors and multiples
Lesson 65438
Do it easily. 3.××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××
Think happily.
3 kinds (each group can be 2, 4 or 8 people)
second kind
Do it easily. 3.× × × √ √
Think happily.
(1) 6, 12 or 24; (2)2 1; (3)4。
The third category
Do it easily. √××××
Think happily.
1.24×26=624; 2.4 1×43= 1763; 3.8 1。
Category 4
Do it easily. ×√√×
3.( 1)D； (2) C.
Think happily.
1.4056; 2.4, 48, 84, 78 and 87.
The fifth category
Do it easily
3.√ × √
4.( 1)204,240,402,420,207,270,702,720;
(2)204,240,402,420,270,702,720;
(3)240,420,270,720。
Think happily1.b; 2.3 1。
The sixth category
Do it easily
2.× √ × × × × ×
3.( 1)③; (2)②; (3)②; (4)②。
Think happily.
1.2×37×4 1=3034; 2. 1 1 and 7
Unit 2 Review
Do it easily
3.√ × √ × × ×
4.( 1)②; (2) ③; (3) ②;
(4)②; (5) ③; (6) ②
5. Even number, even number, even number, odd number.
6.6,30,84。
Think happily.
1.4020,4320,4620,4920;
2. 17——7 1,3 1—— 13,37——73,7 1—— 17,79——97。
Cuboid and cube
Lesson 65438
Do it easily. ×√√×
Think happily about nine.
second kind
Do it easily. √××× √.
Thinking happily about 35
The third category
Think happily 16 square centimeter.
Category 4
Do it easily. √ × √ √
Think happily. 1.62.800
The fifth category
Easy to do 3 (1) b; (2)C； (3)C； (4) answer
Happy thoughts 1000
The sixth category
Do it easily. 2.× √ × √.
Happy thinking 264
Class 7
Do it easily. √ √ × ×
Think happily. 24
The eighth category
Think happily. 480dm3
The ninth category
Think happily 144
Lesson 65438
Easy to achieve1(1) ×; (2)×; (3)×
(4)√ √
× √
× ×
Think happily1111110.4.
1 1 class
Do it easily. × √ √ ×
Think about happiness. 2 liters
Lesson 65438
Think happily. Six cents.
Lesson 65438
Happy thoughts 12 seconds.
Unit 2 Review
Do it easily
2.( 1)C； (2)C； (3)B； (4) a; ⑸B .
3.√ √ √ × √
Think happily.
1. 14; 2.8.2。
4 The meaning and nature of the score
Lesson 65438
Easy to do 1. 2, 4, 9, 4.
Think happily.
second kind
Do it easily. ×√×√×
Think about happiness.
The third category
Think happily.
Category 4
Do it easily. ×√×√.
Think about happiness 1.2.52
The fifth category
Have fun. 1.
2.
2=
The sixth category
Do it easily. × √ √ ×
Think happily1.16; 2.37。
Class 7
Do it easily. ××××××
Think happily. seven
The eighth category
Do it easily. × × × √.
Think happily1.3; 2. 12 flowers.
The ninth category
Do it easily. 3.√×××××
Think happily.
1.2.
Lesson 65438
Do it easily. × √ √ ×
Think happily1.15,210; 2.65。
1 1 class
Think happily 1. 15 and 90 or 30 and 45; 2. 137。
Lesson 65438
Do it easily. 1.×××× 2.
Think happily.
1. 10 or 9,
..... (There are different answers)
Lesson 65438
Think happily.
14 class
Easy to do 2 (1) b; (2)B； ⑶B .
Think about happiness. Two four seven.
Lesson 65438
Easy to do 1. × × × √.
Think happily. eight
Unit 4 Review
Do it easily
2.× × × √ × × √ √ √ ×
3.( 1)B； (2)C； (3)B； (4)C；
(5) A; (6) a; (7)A； (8) C.
Think happily.
1.May14th
2. Every 2m 1 * * * 90 trees; Every 5m 1 * * * 36 trees;
One *** 18 tree per 10 meter;
Addition and subtraction of 5 fractions
Lesson 65438
Think happily.
second kind
Think happily.
(There are many different answers)
The third category
Think happily.
Category 4
Do it easily. ( 1)c； (2) Answer.
Think happily.
The fifth category
Think happily.
The sixth category
Think happily.
Class 7
Think happily 1. Day 58;
2.
The eighth category
Think happily.
The ninth category
Easy to do 1. √× √.
Think happily.
Unit 5 Review
Do it easily. ××××××
Think happily about the longest red and the shortest green.
6 statistical data
Lesson 65438
Think happily. 1
second kind
Do it easily
1.( 1) No.1 factory:13125,000 yuan, No.2 factory: 937.5;
② 7.5 million yuan, 5 million yuan.
2.(2) 1 day to 3 days and 4 days, ***4 1000 people.
Think happily (1)A car, b; vehicle
(2) car A: 36 km/h,
B car: 60 km/h;
(3)7: 50.
Unit 6 Review
1( 1) 146, 145, 145; (2)235,236。
2.( 1) Q 1，Q2，
The third quarter, the fourth quarter:
(2) 1 1 ten thousand yuan.
Think of happiness A: 15, B: 28, C: 17.
7 mathematical wide angle
Lesson 65438
Do it easily
1.( 1) 1 time; (2)2 times, 2 times; (3)3。
Think about happiness three times.
8 General review
Do it easily
2.× √ × × √ × √
3.( 1)B； (2)C； (3) a; (4)B；
(5) A; (6)B； (7)B； (8) C.
Think happily.
1. 1 1cm， 10cm，9cm，598cm2。
2.3.48 square meters.