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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 43 · 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. 1.13 × 19 =
  2. 2.8 × 98 =
  3. 3.10 × 9 =
  4. 4.3 × 98 =
  5. 5.6 × 19 =
  6. 6.13 × 98 =
  7. 7.9 × 49 =
  8. 8.6 × 29 =
  9. 9.11 × 49 =
  10. 10.4 × 9 =
  11. 11.6 × 29 =
  12. 12.3 × 19 =
  13. 13.9 × 19 =
  14. 14.9 × 29 =
  15. 15.12 × 49 =
  16. 16.4 × 9 =
  17. 17.17 × 99 =
  18. 18.7 × 49 =
  19. 19.15 × 9 =
  20. 20.15 × 29 =
  21. 21.5 × 98 =
  22. 22.9 × 49 =
  23. 23.15 × 9 =
  24. 24.13 × 9 =
  25. 25.15 × 19 =
  26. 26.10 × 9 =
  27. 27.14 × 19 =
  28. 28.7 × 29 =
  29. 29.11 × 19 =
  30. 30.4 × 19 =
  31. 31.15 × 9 =
  32. 32.6 × 99 =
  33. 33.4 × 9 =
  34. 34.7 × 9 =
  35. 35.5 × 9 =
  36. 36.16 × 98 =
  37. 37.4 × 19 =
  38. 38.31 × 99 =
  39. 39.4 × 19 =
  40. 40.38 × 98 =

Answer key

  1. 247
  2. 784
  3. 90
  4. 294
  5. 114
  6. 1274
  7. 441
  8. 174
  9. 539
  10. 36
  11. 174
  12. 57
  13. 171
  14. 261
  15. 588
  16. 36
  17. 1683
  18. 343
  19. 135
  20. 435
  21. 490
  22. 441
  23. 135
  24. 117
  25. 285
  26. 90
  27. 266
  28. 203
  29. 209
  30. 76
  31. 135
  32. 594
  33. 36
  34. 63
  35. 45
  36. 1568
  37. 76
  38. 3069
  39. 76
  40. 3724

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