Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 72 · 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. 1.15 × 49 =
2. 2.9 × 29 =
3. 3.9 × 19 =
4. 4.31 × 99 =
5. 5.15 × 49 =
6. 6.5 × 29 =
7. 7.12 × 49 =
8. 8.10 × 19 =
9. 9.12 × 19 =
10. 10.32 × 99 =
11. 11.9 × 99 =
12. 12.12 × 19 =
13. 13.30 × 98 =
14. 14.15 × 49 =
15. 15.3 × 29 =
16. 16.10 × 49 =
17. 17.6 × 49 =
18. 18.12 × 19 =
19. 19.11 × 19 =
20. 20.7 × 9 =
21. 21.10 × 9 =
22. 22.7 × 49 =
23. 23.5 × 19 =
24. 24.12 × 9 =
25. 25.19 × 99 =
26. 26.37 × 98 =
27. 27.13 × 99 =
28. 28.9 × 19 =
29. 29.11 × 19 =
30. 30.4 × 99 =
31. 31.9 × 9 =
32. 32.37 × 99 =
33. 33.6 × 9 =
34. 34.8 × 49 =
35. 35.5 × 99 =
36. 36.10 × 99 =
37. 37.10 × 9 =
38. 38.15 × 49 =
39. 39.9 × 19 =
40. 40.38 × 99 =

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