Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 219 · 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. 1.38 × 99 =
2. 2.18 × 99 =
3. 3.37 × 98 =
4. 4.6 × 99 =
5. 5.10 × 29 =
6. 6.15 × 19 =
7. 7.5 × 49 =
8. 8.38 × 98 =
9. 9.5 × 19 =
10. 10.5 × 19 =
11. 11.14 × 29 =
12. 12.35 × 99 =
13. 13.12 × 99 =
14. 14.5 × 49 =
15. 15.34 × 99 =
16. 16.14 × 29 =
17. 17.15 × 49 =
18. 18.11 × 49 =
19. 19.9 × 99 =
20. 20.12 × 19 =
21. 21.15 × 19 =
22. 22.13 × 9 =
23. 23.23 × 98 =
24. 24.8 × 29 =
25. 25.8 × 29 =
26. 26.6 × 29 =
27. 27.11 × 99 =
28. 28.14 × 49 =
29. 29.7 × 49 =
30. 30.14 × 99 =
31. 31.3 × 29 =
32. 32.11 × 99 =
33. 33.5 × 29 =
34. 34.13 × 19 =
35. 35.14 × 19 =
36. 36.4 × 29 =
37. 37.4 × 9 =
38. 38.14 × 49 =
39. 39.8 × 19 =
40. 40.9 × 19 =

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