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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 414 · 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. 1.11 × 29 =
  2. 2.3 × 98 =
  3. 3.13 × 19 =
  4. 4.4 × 49 =
  5. 5.13 × 99 =
  6. 6.3 × 9 =
  7. 7.8 × 9 =
  8. 8.10 × 49 =
  9. 9.22 × 98 =
  10. 10.11 × 29 =
  11. 11.14 × 29 =
  12. 12.4 × 29 =
  13. 13.22 × 99 =
  14. 14.17 × 98 =
  15. 15.12 × 29 =
  16. 16.38 × 98 =
  17. 17.8 × 19 =
  18. 18.9 × 9 =
  19. 19.16 × 98 =
  20. 20.9 × 99 =
  21. 21.29 × 99 =
  22. 22.6 × 49 =
  23. 23.5 × 49 =
  24. 24.35 × 98 =
  25. 25.19 × 98 =
  26. 26.10 × 29 =
  27. 27.3 × 19 =
  28. 28.7 × 98 =
  29. 29.5 × 9 =
  30. 30.7 × 29 =
  31. 31.13 × 98 =
  32. 32.5 × 19 =
  33. 33.10 × 9 =
  34. 34.15 × 9 =
  35. 35.4 × 99 =
  36. 36.3 × 29 =
  37. 37.13 × 9 =
  38. 38.9 × 9 =
  39. 39.8 × 29 =
  40. 40.13 × 19 =

Answer key

  1. 319
  2. 294
  3. 247
  4. 196
  5. 1287
  6. 27
  7. 72
  8. 490
  9. 2156
  10. 319
  11. 406
  12. 116
  13. 2178
  14. 1666
  15. 348
  16. 3724
  17. 152
  18. 81
  19. 1568
  20. 891
  21. 2871
  22. 294
  23. 245
  24. 3430
  25. 1862
  26. 290
  27. 57
  28. 686
  29. 45
  30. 203
  31. 1274
  32. 95
  33. 90
  34. 135
  35. 396
  36. 87
  37. 117
  38. 81
  39. 232
  40. 247

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