1. 4
4
Mathana1

2. 1.
ก.
.
.
.
.
Mathana2

3. 2.
ก.
.
.
.
.
Mathana3

4. 3.
ก. 15 .5 .
. 1
. 1
. . . 150 .
. 15 .5 .
200 .
100 .
. . 150 .
Mathana4

5. 4.
. 6 . . 8 .
5 . 4 . 4 . 4 .
8 .
10 .
. 8 . . 7 .
6 . 5 . 5 .
7 .
7 .
. . 25 .
. 24 .
. 21 .
. 24 .
Mathana5

6. 5.
ก. 180 .
. 150 .
. 5 .
. . 80,000 .
. Mathana6

7. 6. . . 4
x y z
w 3 4 5
2
4
9
16
25
. w . x
. y . z
Mathana7

8. .
- w 2+2+2+2 = 8
- x 3+3+3+3 = 12
- y 4+4+4+4 = 16
- z 5+5+5+5 = 20
Mathana8

9. 7.
90 . 40 .
. 50 .
. 130 .
90 .
. 260 .
. 360 .
40 .
. = 40+90+40+90
= 260 .
Mathana9

10. 8.
2 .
.2 . 1 .
.4 .
.6 .
.8 .
. = 2+1+1+2+1+1 = 8 .
Mathana10

11. 9.
. 16 .
. 22 .
10
. 26 .
. 32 .
6
. = 10+6+10+6
= 32
Mathana11

12. 10.
.
.
.
.
ก.
Mathana12

13. 11-14
4 .
3 .
6 .
5 .
5 .
1 . : 100
11. . 500 .
12. 300 .
13. 700 .
14. 500 .
Mathana13

14. 15. 6
. 6
. 10
. 12
. 16
. 1 =2
6 = 6x2
= 12 .
Mathana14

15. 16. 11 .6 .
. 58 . . 116 .
. 1,106 . . 11,006 .
. 1 . = 10 .
11 . = 110 .
6 .
110+6 = 116 .
Mathana15

16. 17. 15 . 75 .
. 225 . 1,575
. 7,875 . 15,075
. 1 . = 100 .
15 . = 100 x 15 .
= 1,500 .
75 .
1,500 + 75
= 1,575 . Mathana16

17. 18. 285 .
.1 85
.2 85
. 14 5
. 28 5
. 100 . 1
285 ÷ 100 = 2 85
285 . 2 . 85 .
Mathana17

18. 19. 160
. 20
. 40
. 80
. 160
. 2 =1
160 = 160 ÷ 2
= 80
Mathana18

19. 20. 9 20
4 85
.2 35
.4 35
.4 65
. 5 65
ข.
9 20
4 85
-
4 35
Mathana19
4 35

20. 21. 60 . 250 .
115 . 870 .
. 175 . 20 .
. 175 . 120 .
. 176 . 120 .
. 186 . 20 .
. . .
60 250
+
115 870
176 120
Mathana20

21. 22.
1 750
5
. 50 . 50 . . 50 . 750 .
.8 . 750 . . 42 . 50 .
.
.
1 1 750
5
8 750
Mathana21

22. 23.
. 6
. 7
. 9
. 11
. 7
Mathana22

23. 24. 23 1
3 .
. 18
. 21
. 27
. 33
. 1 3 .
7 7x3 .
= 21 .
21
Mathana23

24. 25.
.
.
.
.
.
Mathana24

25. 26. 2 7
. 17
. 27
. 207
. 2,007
. 1 10
2
2x10 = 20
7
20 + 7 = 27
Mathana25

26. 27. 5,300
.2 150
.5 300
. 53
. 530
. 1,000 1
5,300 5,300 1,000
= 5 300
5,300 5 300
Mathana26

27. 28. 5
. 50
. 500
. 5,000
. 50,000
. 1 1,000
5 1,000 x 5
= 5,000
Mathana27

28. 29. 6,600
.3 3 .3 6
.6 3 .6 6
. 100 1
6,600 6,600 100
6,600 = 66
( 10 1
66 66 10
= 6 6
6,600 6 6
Mathana28

29. 30. 3 4 3 7
.3 5
.6 1
.7
.7 1
. .
3 4
+
3 7
7 1
Mathana29

30. 31. 7
5
. 8
. 12
. 14
. 28
. 1 . 10
7 . 7x10
= 70
5 70 5
= 14
14 Mathana30

31. 32.
20 2
1 3
. 10 5
. 18 9
. 19 1
. 21 5
. .
20 2 -
1 3
18 9
Mathana31

32. 33. 1
.
.
.
1
.
.
Mathana32

33. 34 5 25
2
. 20
. 25
. 30
. 35
ก. 2 5
5 25
2 25
2 20
Mathana33

34. 35. 1,000
. 250
. 500
. 750
. 1,000
Mathana34

35. 36. 150
. 150
. 300
. 450
. 600
150
= +
= 150 + 150
= 300
Mathana35

36. 37. 1 4 3
. 6
12
. 24
. 48
¼ 3
1 =4x¼
=4x3
= 12
12 Mathana36

37. 38.
.
.
. ,
Mathana37

38. 39.
. 30
2,000,000
. 120
. 80
ก.
Mathana38

39. 40. 3
. 30
60
. 300
. 6,000
. 1 100
3 100 x 3
= 300
Mathana39

40. 41. 2
. 20
40
. 200
. 4,000
. 1 20
2 20x2
= 40
Mathana40

41. 42. 2 1,200
. 22
32
. 2,200
. 3,200
. 1 1,000
2 1,000 x 2
= 2,000
2,000+1,200 = 3,200
Mathana41

42. 43. 5,300
.5 300
50 300
. 53
. 530
ก. 1,000 1
5,300
5,300 1,000
=5 300
5,300 5 300
Mathana42

43. 44. 750
6
.4 500
40 500
. 45 . 450
ก. 1 750
6 750 x 6
= 4,500
1,000 1
4,500
4,500 1,000
=4 500
4,500 4 500
Mathana43

44. 45. 6
42
.7
14
. 126
. 252
ก. 6 1
42 42 6
=7
7
Mathana44

45. Mathana45

46. Mathana46