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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 807 · 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. 1.16 × 98 =
  2. 2.5 × 29 =
  3. 3.10 × 19 =
  4. 4.8 × 49 =
  5. 5.15 × 9 =
  6. 6.7 × 9 =
  7. 7.14 × 19 =
  8. 8.6 × 49 =
  9. 9.4 × 49 =
  10. 10.5 × 49 =
  11. 11.11 × 49 =
  12. 12.7 × 19 =
  13. 13.24 × 99 =
  14. 14.4 × 49 =
  15. 15.35 × 99 =
  16. 16.5 × 49 =
  17. 17.12 × 49 =
  18. 18.3 × 49 =
  19. 19.40 × 99 =
  20. 20.11 × 98 =
  21. 21.18 × 99 =
  22. 22.12 × 9 =
  23. 23.40 × 99 =
  24. 24.7 × 49 =
  25. 25.7 × 9 =
  26. 26.15 × 29 =
  27. 27.5 × 99 =
  28. 28.12 × 29 =
  29. 29.9 × 99 =
  30. 30.3 × 19 =
  31. 31.12 × 19 =
  32. 32.5 × 9 =
  33. 33.8 × 9 =
  34. 34.25 × 99 =
  35. 35.12 × 9 =
  36. 36.12 × 19 =
  37. 37.8 × 9 =
  38. 38.10 × 19 =
  39. 39.5 × 9 =
  40. 40.11 × 29 =

Answer key

  1. 1568
  2. 145
  3. 190
  4. 392
  5. 135
  6. 63
  7. 266
  8. 294
  9. 196
  10. 245
  11. 539
  12. 133
  13. 2376
  14. 196
  15. 3465
  16. 245
  17. 588
  18. 147
  19. 3960
  20. 1078
  21. 1782
  22. 108
  23. 3960
  24. 343
  25. 63
  26. 435
  27. 495
  28. 348
  29. 891
  30. 57
  31. 228
  32. 45
  33. 72
  34. 2475
  35. 108
  36. 228
  37. 72
  38. 190
  39. 45
  40. 319

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