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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 668 · 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. 1.22 × 98 =
  2. 2.4 × 9 =
  3. 3.6 × 19 =
  4. 4.7 × 29 =
  5. 5.35 × 99 =
  6. 6.9 × 19 =
  7. 7.4 × 99 =
  8. 8.15 × 49 =
  9. 9.29 × 98 =
  10. 10.11 × 49 =
  11. 11.12 × 19 =
  12. 12.6 × 19 =
  13. 13.26 × 99 =
  14. 14.4 × 49 =
  15. 15.24 × 99 =
  16. 16.4 × 9 =
  17. 17.4 × 29 =
  18. 18.21 × 98 =
  19. 19.3 × 49 =
  20. 20.8 × 9 =
  21. 21.9 × 29 =
  22. 22.6 × 29 =
  23. 23.18 × 99 =
  24. 24.3 × 19 =
  25. 25.10 × 19 =
  26. 26.8 × 9 =
  27. 27.36 × 99 =
  28. 28.3 × 49 =
  29. 29.15 × 29 =
  30. 30.7 × 29 =
  31. 31.4 × 9 =
  32. 32.8 × 19 =
  33. 33.4 × 19 =
  34. 34.14 × 99 =
  35. 35.14 × 49 =
  36. 36.6 × 49 =
  37. 37.11 × 9 =
  38. 38.7 × 19 =
  39. 39.9 × 29 =
  40. 40.11 × 98 =

Answer key

  1. 2156
  2. 36
  3. 114
  4. 203
  5. 3465
  6. 171
  7. 396
  8. 735
  9. 2842
  10. 539
  11. 228
  12. 114
  13. 2574
  14. 196
  15. 2376
  16. 36
  17. 116
  18. 2058
  19. 147
  20. 72
  21. 261
  22. 174
  23. 1782
  24. 57
  25. 190
  26. 72
  27. 3564
  28. 147
  29. 435
  30. 203
  31. 36
  32. 152
  33. 76
  34. 1386
  35. 686
  36. 294
  37. 99
  38. 133
  39. 261
  40. 1078

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