Question

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Answer 1

Respuesta:

1-

15/4= 3 enteros 3/4

53/6 = 8 enteros 5/6

42/5= 8 enteros 2/5

19/2 = 9 enteros 1/2

32/ 6 = 5 enteros 2/6

68/9 = 7 enteros 5/9

75/4= 18 enteros 3/4

85/7= 12 enteros 1/7

23/3 = 7 enteros 2/3

62/8 = 7 enteros 6/ 8

2-

2×8 = 16 + 1 = 17 = 17/2

16× 9 = 144 + 9 = 153 /9

7×4 = 28 + 2 = 30/ 7

12× 5 = 60 + 7 = 67/ 7

20× 1 = 20 + 7 = 27/ 20

12 × 3 = 36 + 2 = 38/3

3-

a- 7/6 + 2/5 = 35+12/ 30 = 46/ 30

6× 5 = 30.

30÷6=5 5×7= 35

34+12= 46

30÷5 = 6 6× 2 = 12

b- 1/7 + 1/8 = 8+7/ 56 = 15/56

7 × 8 = 56

56÷ 7= 8 8×1=8

7+8=15

56÷8=7 7×1=7

c- 7/13 + 5/10= 70+65/130 = 135/ 30

13×10= 130

130÷ 13 =10 10×7= 70

70+ 65= 135

130÷10 = 13 13× 5 = 65

d- 7/5 - 1/3 = 21- 5/ 15 = 16/15

5×3= 15

15÷5= 3 3× 7 = 21

21-5= 16

15÷3= 5 5×1= 5

e- 8/7 - 9/11 = 88-63/77 = 25/77

7×11 = 77

77÷7=11. 11×8=88

88-63= 25

77÷11=7. 7×9= 63

f- 11/4 - 1/9 = 99-4/36 = 95/36

4×9 = 36

36÷4=9. 9×11= 99

99-4= 95

36÷9=4. 4× 1 = 4

4-

3 × 7 = 3 × 7 = 21

5 8 5 × 8 40

4 × 5 = 4 × 5 = 20

10. 7 10×7 70

5 × 2 = 5×2 = 10

6 5 5×6 30

12 × 1 = 12×1 = 12

2 2 2×2 4

3 × 1 = 3 × 1 = 3

6 5 6×5 30

7 × 1 = 7 × 1 = 7

10 8 10×8 80