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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 130 · 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. 1.4 × 29 =
  2. 2.8 × 99 =
  3. 3.8 × 19 =
  4. 4.7 × 49 =
  5. 5.24 × 99 =
  6. 6.12 × 19 =
  7. 7.5 × 9 =
  8. 8.15 × 29 =
  9. 9.17 × 99 =
  10. 10.17 × 98 =
  11. 11.5 × 49 =
  12. 12.14 × 9 =
  13. 13.4 × 49 =
  14. 14.3 × 49 =
  15. 15.11 × 19 =
  16. 16.9 × 9 =
  17. 17.4 × 29 =
  18. 18.12 × 98 =
  19. 19.8 × 19 =
  20. 20.14 × 49 =
  21. 21.6 × 29 =
  22. 22.18 × 99 =
  23. 23.5 × 29 =
  24. 24.9 × 9 =
  25. 25.38 × 98 =
  26. 26.4 × 9 =
  27. 27.31 × 99 =
  28. 28.15 × 9 =
  29. 29.4 × 9 =
  30. 30.13 × 49 =
  31. 31.7 × 19 =
  32. 32.15 × 29 =
  33. 33.10 × 49 =
  34. 34.11 × 29 =
  35. 35.9 × 49 =
  36. 36.3 × 9 =
  37. 37.11 × 9 =
  38. 38.28 × 99 =
  39. 39.5 × 29 =
  40. 40.15 × 19 =

Answer key

  1. 116
  2. 792
  3. 152
  4. 343
  5. 2376
  6. 228
  7. 45
  8. 435
  9. 1683
  10. 1666
  11. 245
  12. 126
  13. 196
  14. 147
  15. 209
  16. 81
  17. 116
  18. 1176
  19. 152
  20. 686
  21. 174
  22. 1782
  23. 145
  24. 81
  25. 3724
  26. 36
  27. 3069
  28. 135
  29. 36
  30. 637
  31. 133
  32. 435
  33. 490
  34. 319
  35. 441
  36. 27
  37. 99
  38. 2772
  39. 145
  40. 285

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