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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 496 · 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. 1.32 × 98 =
  2. 2.24 × 99 =
  3. 3.7 × 49 =
  4. 4.5 × 9 =
  5. 5.17 × 99 =
  6. 6.14 × 9 =
  7. 7.5 × 19 =
  8. 8.8 × 9 =
  9. 9.36 × 98 =
  10. 10.3 × 9 =
  11. 11.3 × 19 =
  12. 12.5 × 29 =
  13. 13.24 × 99 =
  14. 14.6 × 99 =
  15. 15.3 × 98 =
  16. 16.24 × 99 =
  17. 17.35 × 98 =
  18. 18.8 × 9 =
  19. 19.12 × 9 =
  20. 20.4 × 99 =
  21. 21.12 × 99 =
  22. 22.5 × 49 =
  23. 23.9 × 29 =
  24. 24.7 × 29 =
  25. 25.3 × 29 =
  26. 26.6 × 49 =
  27. 27.12 × 19 =
  28. 28.3 × 9 =
  29. 29.8 × 49 =
  30. 30.13 × 49 =
  31. 31.11 × 29 =
  32. 32.3 × 49 =
  33. 33.3 × 98 =
  34. 34.12 × 9 =
  35. 35.10 × 29 =
  36. 36.10 × 29 =
  37. 37.6 × 29 =
  38. 38.11 × 29 =
  39. 39.15 × 9 =
  40. 40.5 × 29 =

Answer key

  1. 3136
  2. 2376
  3. 343
  4. 45
  5. 1683
  6. 126
  7. 95
  8. 72
  9. 3528
  10. 27
  11. 57
  12. 145
  13. 2376
  14. 594
  15. 294
  16. 2376
  17. 3430
  18. 72
  19. 108
  20. 396
  21. 1188
  22. 245
  23. 261
  24. 203
  25. 87
  26. 294
  27. 228
  28. 27
  29. 392
  30. 637
  31. 319
  32. 147
  33. 294
  34. 108
  35. 290
  36. 290
  37. 174
  38. 319
  39. 135
  40. 145

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