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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 184 · 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. 1.7 × 9 =
  2. 2.14 × 49 =
  3. 3.6 × 19 =
  4. 4.9 × 99 =
  5. 5.6 × 19 =
  6. 6.5 × 19 =
  7. 7.12 × 99 =
  8. 8.37 × 98 =
  9. 9.13 × 29 =
  10. 10.4 × 98 =
  11. 11.11 × 19 =
  12. 12.6 × 19 =
  13. 13.10 × 29 =
  14. 14.11 × 9 =
  15. 15.15 × 29 =
  16. 16.3 × 19 =
  17. 17.4 × 19 =
  18. 18.5 × 29 =
  19. 19.7 × 99 =
  20. 20.8 × 9 =
  21. 21.9 × 49 =
  22. 22.10 × 19 =
  23. 23.15 × 49 =
  24. 24.4 × 9 =
  25. 25.7 × 99 =
  26. 26.16 × 99 =
  27. 27.5 × 9 =
  28. 28.5 × 49 =
  29. 29.36 × 99 =
  30. 30.7 × 19 =
  31. 31.25 × 98 =
  32. 32.10 × 29 =
  33. 33.4 × 9 =
  34. 34.6 × 49 =
  35. 35.14 × 49 =
  36. 36.11 × 19 =
  37. 37.10 × 29 =
  38. 38.12 × 29 =
  39. 39.33 × 99 =
  40. 40.5 × 29 =

Answer key

  1. 63
  2. 686
  3. 114
  4. 891
  5. 114
  6. 95
  7. 1188
  8. 3626
  9. 377
  10. 392
  11. 209
  12. 114
  13. 290
  14. 99
  15. 435
  16. 57
  17. 76
  18. 145
  19. 693
  20. 72
  21. 441
  22. 190
  23. 735
  24. 36
  25. 693
  26. 1584
  27. 45
  28. 245
  29. 3564
  30. 133
  31. 2450
  32. 290
  33. 36
  34. 294
  35. 686
  36. 209
  37. 290
  38. 348
  39. 3267
  40. 145

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