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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 632 · 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. 1.5 × 29 =
  2. 2.13 × 29 =
  3. 3.12 × 9 =
  4. 4.38 × 98 =
  5. 5.11 × 29 =
  6. 6.14 × 9 =
  7. 7.18 × 99 =
  8. 8.5 × 19 =
  9. 9.4 × 19 =
  10. 10.4 × 19 =
  11. 11.35 × 98 =
  12. 12.4 × 29 =
  13. 13.9 × 49 =
  14. 14.12 × 49 =
  15. 15.15 × 19 =
  16. 16.4 × 19 =
  17. 17.7 × 49 =
  18. 18.11 × 19 =
  19. 19.10 × 9 =
  20. 20.15 × 99 =
  21. 21.4 × 19 =
  22. 22.3 × 98 =
  23. 23.6 × 9 =
  24. 24.10 × 29 =
  25. 25.11 × 49 =
  26. 26.3 × 99 =
  27. 27.10 × 98 =
  28. 28.12 × 9 =
  29. 29.4 × 98 =
  30. 30.6 × 49 =
  31. 31.34 × 98 =
  32. 32.7 × 9 =
  33. 33.12 × 9 =
  34. 34.15 × 9 =
  35. 35.7 × 9 =
  36. 36.4 × 9 =
  37. 37.6 × 9 =
  38. 38.15 × 19 =
  39. 39.9 × 9 =
  40. 40.4 × 19 =

Answer key

  1. 145
  2. 377
  3. 108
  4. 3724
  5. 319
  6. 126
  7. 1782
  8. 95
  9. 76
  10. 76
  11. 3430
  12. 116
  13. 441
  14. 588
  15. 285
  16. 76
  17. 343
  18. 209
  19. 90
  20. 1485
  21. 76
  22. 294
  23. 54
  24. 290
  25. 539
  26. 297
  27. 980
  28. 108
  29. 392
  30. 294
  31. 3332
  32. 63
  33. 108
  34. 135
  35. 63
  36. 36
  37. 54
  38. 285
  39. 81
  40. 76

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