Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 431 · 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. 1.32 × 99 =
2. 2.26 × 98 =
3. 3.13 × 99 =
4. 4.3 × 49 =
5. 5.15 × 29 =
6. 6.6 × 9 =
7. 7.31 × 98 =
8. 8.14 × 99 =
9. 9.5 × 49 =
10. 10.11 × 9 =
11. 11.13 × 19 =
12. 12.32 × 99 =
13. 13.12 × 9 =
14. 14.15 × 9 =
15. 15.4 × 9 =
16. 16.14 × 49 =
17. 17.4 × 29 =
18. 18.7 × 29 =
19. 19.13 × 49 =
20. 20.8 × 9 =
21. 21.8 × 99 =
22. 22.15 × 99 =
23. 23.33 × 98 =
24. 24.7 × 98 =
25. 25.9 × 98 =
26. 26.14 × 9 =
27. 27.4 × 19 =
28. 28.8 × 49 =
29. 29.11 × 29 =
30. 30.9 × 49 =
31. 31.5 × 49 =
32. 32.11 × 98 =
33. 33.37 × 99 =
34. 34.29 × 98 =
35. 35.28 × 99 =
36. 36.3 × 49 =
37. 37.15 × 9 =
38. 38.15 × 19 =
39. 39.39 × 98 =
40. 40.3 × 19 =

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