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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 453 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.15 × 9 =
  2. 2.3 × 29 =
  3. 3.12 × 19 =
  4. 4.6 × 29 =
  5. 5.25 × 98 =
  6. 6.17 × 98 =
  7. 7.8 × 29 =
  8. 8.3 × 29 =
  9. 9.13 × 98 =
  10. 10.14 × 9 =
  11. 11.4 × 29 =
  12. 12.40 × 99 =
  13. 13.11 × 98 =
  14. 14.3 × 19 =
  15. 15.5 × 49 =
  16. 16.5 × 49 =
  17. 17.4 × 49 =
  18. 18.10 × 29 =
  19. 19.5 × 49 =
  20. 20.39 × 99 =
  21. 21.15 × 9 =
  22. 22.3 × 9 =
  23. 23.8 × 9 =
  24. 24.7 × 29 =
  25. 25.14 × 29 =
  26. 26.10 × 29 =
  27. 27.7 × 9 =
  28. 28.12 × 99 =
  29. 29.34 × 98 =
  30. 30.14 × 19 =
  31. 31.13 × 9 =
  32. 32.4 × 19 =
  33. 33.11 × 19 =
  34. 34.4 × 9 =
  35. 35.10 × 19 =
  36. 36.3 × 9 =
  37. 37.12 × 49 =
  38. 38.13 × 19 =
  39. 39.39 × 99 =
  40. 40.4 × 49 =

Answer key

  1. 135
  2. 87
  3. 228
  4. 174
  5. 2450
  6. 1666
  7. 232
  8. 87
  9. 1274
  10. 126
  11. 116
  12. 3960
  13. 1078
  14. 57
  15. 245
  16. 245
  17. 196
  18. 290
  19. 245
  20. 3861
  21. 135
  22. 27
  23. 72
  24. 203
  25. 406
  26. 290
  27. 63
  28. 1188
  29. 3332
  30. 266
  31. 117
  32. 76
  33. 209
  34. 36
  35. 190
  36. 27
  37. 588
  38. 247
  39. 3861
  40. 196

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