Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 530 · 40 questions

How it works (Round and adjust): Round up: 49 is 50 − 1, 98 is 100 − 2. Multiply by the round number. Take away the number times the bit you added.

1. 1.8 × 9 =
2. 2.5 × 98 =
3. 3.14 × 49 =
4. 4.16 × 98 =
5. 5.15 × 29 =
6. 6.3 × 19 =
7. 7.6 × 49 =
8. 8.7 × 29 =
9. 9.8 × 9 =
10. 10.31 × 99 =
11. 11.6 × 9 =
12. 12.3 × 29 =
13. 13.9 × 29 =
14. 14.10 × 49 =
15. 15.39 × 98 =
16. 16.39 × 98 =
17. 17.23 × 98 =
18. 18.15 × 29 =
19. 19.36 × 99 =
20. 20.23 × 98 =
21. 21.3 × 49 =
22. 22.12 × 19 =
23. 23.15 × 49 =
24. 24.7 × 49 =
25. 25.8 × 98 =
26. 26.12 × 99 =
27. 27.9 × 49 =
28. 28.10 × 29 =
29. 29.6 × 29 =
30. 30.3 × 19 =
31. 31.12 × 98 =
32. 32.9 × 9 =
33. 33.10 × 9 =
34. 34.30 × 99 =
35. 35.20 × 99 =
36. 36.22 × 99 =
37. 37.6 × 19 =
38. 38.7 × 29 =
39. 39.8 × 29 =
40. 40.15 × 9 =

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