Jawaban:

1. 3 x 3/7 = 9/7

2. 5 X 1/8 = 5/8

3. 7 X 2/15 = 14/15

4. 2/9 X 12 = 24/9

5. 2/3 X 4/7 = 8/21

6. 3/5 X 5/8 = 15/40

7. 2/7 X 14/15 = 28/105

8. ¾ X 10/27 = 40/108

9. 5/11 X 33/3 = 165/33

10. 4 1/5 X 2 1/7 = 21/5 × 15/7 = 315/35

11. 2 ½ X 1 2/5 = 5/2 × 7/5 = 35/10 = 7/2

12. 3 2/5 X 2 1/10 = 17/5 × 21/10 = 357/50

13. 2/5 : 3/7 = 2/5×7/3 = 14/15

14. ¾ : 5/9 = ¾ × 9/5 = 27/20 = 1 7/20

15. 4/5 : 10/ 16 = ⅘ × 10/16 = 40/80 = ½

16. 2/7 : 4/21 = 2/7 × 21/4 = 42/28

17. 4 ¾ : 1 ½ = 19/4 ÷ 3/2 = 19/4 × 2/3 = 38/12

18. 3 ½ : 1 1/5 = 7/2 ÷ 6/5 = 7/2 × 5/6 = 35/12

19. 2 4/5 : 2 3/7 = 14/5 ÷ 17/7 = 14/5 × 7/17 = 98/85

20. 5 4/5 : 2 ½ = 29/5 ÷ 5/2 = 29/5×2/5 = 58/25

21. 0,34 + 0,5 = 0,34+0,50 = 0,84

22. 0,05 + 20,3 = 0,05 + 20,30 = 20,35

23. 0,125 + 0,18 = 0,125 + 0,180 = 0,305

24. 6,786 – 0,12 = 6,786 - 0,120 = 6,666

25. 12,567 – 3,8 = 12,567 - 3,800 = 8,767

26. 0,6 X 0,12 = 6/10 × 12/100 = 72/1.000 = 0,072

27. 1,15 X 0,3 = 115/100 × 3/10 = 345/1.000 = 0,345

28. 0,05 X 0,25 = 5/100 x 25/100 = 124/10.000 =

= 0,0124

29. 0,12 : 0,4 = 12/100 ÷ 4/10 = 3/10

30. 0,048 : 0,06 = 48/1.000 ÷ 6/100 = 8/10

Penjelasan dengan langkah-langkah:

maaf kalau salah ya

semoga bermanfaat