Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 621 · 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. 1.21 × 99 =
2. 2.40 × 98 =
3. 3.12 × 29 =
4. 4.5 × 99 =
5. 5.5 × 49 =
6. 6.16 × 98 =
7. 7.5 × 19 =
8. 8.34 × 98 =
9. 9.12 × 9 =
10. 10.7 × 19 =
11. 11.13 × 49 =
12. 12.9 × 98 =
13. 13.8 × 49 =
14. 14.8 × 19 =
15. 15.7 × 29 =
16. 16.4 × 99 =
17. 17.11 × 49 =
18. 18.4 × 98 =
19. 19.20 × 99 =
20. 20.5 × 49 =
21. 21.15 × 19 =
22. 22.38 × 98 =
23. 23.12 × 98 =
24. 24.14 × 29 =
25. 25.40 × 99 =
26. 26.37 × 99 =
27. 27.10 × 19 =
28. 28.10 × 49 =
29. 29.13 × 9 =
30. 30.3 × 9 =
31. 31.3 × 9 =
32. 32.10 × 9 =
33. 33.15 × 49 =
34. 34.34 × 98 =
35. 35.10 × 49 =
36. 36.14 × 19 =
37. 37.14 × 98 =
38. 38.5 × 19 =
39. 39.12 × 9 =
40. 40.11 × 9 =

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