Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 230 · 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. 1.12 × 29 =
2. 2.15 × 9 =
3. 3.11 × 29 =
4. 4.4 × 49 =
5. 5.13 × 99 =
6. 6.7 × 9 =
7. 7.32 × 99 =
8. 8.31 × 98 =
9. 9.10 × 49 =
10. 10.7 × 19 =
11. 11.3 × 99 =
12. 12.4 × 29 =
13. 13.5 × 9 =
14. 14.38 × 98 =
15. 15.12 × 9 =
16. 16.27 × 98 =
17. 17.15 × 98 =
18. 18.15 × 29 =
19. 19.4 × 19 =
20. 20.12 × 98 =
21. 21.31 × 99 =
22. 22.13 × 9 =
23. 23.15 × 29 =
24. 24.5 × 29 =
25. 25.10 × 98 =
26. 26.3 × 19 =
27. 27.10 × 29 =
28. 28.15 × 9 =
29. 29.7 × 99 =
30. 30.38 × 99 =
31. 31.8 × 49 =
32. 32.7 × 49 =
33. 33.9 × 9 =
34. 34.4 × 99 =
35. 35.5 × 98 =
36. 36.14 × 99 =
37. 37.10 × 19 =
38. 38.8 × 9 =
39. 39.40 × 99 =
40. 40.12 × 98 =

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