Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 902 · 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. 1.3 × 49 =
2. 2.12 × 49 =
3. 3.15 × 9 =
4. 4.3 × 29 =
5. 5.12 × 9 =
6. 6.3 × 49 =
7. 7.11 × 9 =
8. 8.13 × 19 =
9. 9.19 × 99 =
10. 10.5 × 49 =
11. 11.3 × 19 =
12. 12.9 × 19 =
13. 13.12 × 29 =
14. 14.10 × 49 =
15. 15.31 × 99 =
16. 16.8 × 19 =
17. 17.15 × 98 =
18. 18.11 × 49 =
19. 19.4 × 9 =
20. 20.21 × 99 =
21. 21.36 × 98 =
22. 22.3 × 9 =
23. 23.14 × 19 =
24. 24.6 × 98 =
25. 25.24 × 99 =
26. 26.21 × 99 =
27. 27.3 × 99 =
28. 28.15 × 9 =
29. 29.23 × 99 =
30. 30.5 × 49 =
31. 31.29 × 98 =
32. 32.33 × 99 =
33. 33.4 × 99 =
34. 34.13 × 19 =
35. 35.6 × 29 =
36. 36.3 × 9 =
37. 37.25 × 99 =
38. 38.30 × 99 =
39. 39.11 × 98 =
40. 40.14 × 29 =

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