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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 22 · 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. 1.3 × 19 =
  2. 2.11 × 9 =
  3. 3.4 × 29 =
  4. 4.39 × 98 =
  5. 5.5 × 29 =
  6. 6.11 × 19 =
  7. 7.12 × 19 =
  8. 8.13 × 19 =
  9. 9.9 × 49 =
  10. 10.14 × 9 =
  11. 11.24 × 99 =
  12. 12.12 × 49 =
  13. 13.7 × 9 =
  14. 14.4 × 9 =
  15. 15.12 × 99 =
  16. 16.7 × 19 =
  17. 17.5 × 98 =
  18. 18.3 × 49 =
  19. 19.13 × 98 =
  20. 20.13 × 29 =
  21. 21.6 × 19 =
  22. 22.9 × 29 =
  23. 23.4 × 9 =
  24. 24.3 × 19 =
  25. 25.10 × 49 =
  26. 26.14 × 19 =
  27. 27.7 × 19 =
  28. 28.12 × 49 =
  29. 29.15 × 49 =
  30. 30.12 × 9 =
  31. 31.10 × 19 =
  32. 32.4 × 99 =
  33. 33.8 × 49 =
  34. 34.20 × 99 =
  35. 35.10 × 49 =
  36. 36.6 × 49 =
  37. 37.3 × 98 =
  38. 38.5 × 49 =
  39. 39.11 × 9 =
  40. 40.10 × 9 =

Answer key

  1. 57
  2. 99
  3. 116
  4. 3822
  5. 145
  6. 209
  7. 228
  8. 247
  9. 441
  10. 126
  11. 2376
  12. 588
  13. 63
  14. 36
  15. 1188
  16. 133
  17. 490
  18. 147
  19. 1274
  20. 377
  21. 114
  22. 261
  23. 36
  24. 57
  25. 490
  26. 266
  27. 133
  28. 588
  29. 735
  30. 108
  31. 190
  32. 396
  33. 392
  34. 1980
  35. 490
  36. 294
  37. 294
  38. 245
  39. 99
  40. 90

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