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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 65 · 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. 1.12 × 19 =
  2. 2.7 × 19 =
  3. 3.25 × 98 =
  4. 4.8 × 29 =
  5. 5.13 × 19 =
  6. 6.15 × 9 =
  7. 7.4 × 29 =
  8. 8.14 × 19 =
  9. 9.8 × 98 =
  10. 10.12 × 19 =
  11. 11.15 × 49 =
  12. 12.9 × 49 =
  13. 13.11 × 9 =
  14. 14.9 × 9 =
  15. 15.4 × 29 =
  16. 16.5 × 49 =
  17. 17.6 × 49 =
  18. 18.7 × 9 =
  19. 19.12 × 19 =
  20. 20.14 × 29 =
  21. 21.4 × 29 =
  22. 22.7 × 19 =
  23. 23.5 × 99 =
  24. 24.9 × 19 =
  25. 25.14 × 29 =
  26. 26.5 × 9 =
  27. 27.3 × 9 =
  28. 28.11 × 29 =
  29. 29.15 × 49 =
  30. 30.15 × 29 =
  31. 31.9 × 98 =
  32. 32.7 × 29 =
  33. 33.15 × 99 =
  34. 34.17 × 99 =
  35. 35.4 × 49 =
  36. 36.10 × 19 =
  37. 37.5 × 49 =
  38. 38.11 × 29 =
  39. 39.3 × 29 =
  40. 40.3 × 29 =

Answer key

  1. 228
  2. 133
  3. 2450
  4. 232
  5. 247
  6. 135
  7. 116
  8. 266
  9. 784
  10. 228
  11. 735
  12. 441
  13. 99
  14. 81
  15. 116
  16. 245
  17. 294
  18. 63
  19. 228
  20. 406
  21. 116
  22. 133
  23. 495
  24. 171
  25. 406
  26. 45
  27. 27
  28. 319
  29. 735
  30. 435
  31. 882
  32. 203
  33. 1485
  34. 1683
  35. 196
  36. 190
  37. 245
  38. 319
  39. 87
  40. 87

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