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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 459 · 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. 1.13 × 29 =
  2. 2.34 × 98 =
  3. 3.4 × 29 =
  4. 4.4 × 9 =
  5. 5.10 × 9 =
  6. 6.5 × 49 =
  7. 7.9 × 29 =
  8. 8.13 × 9 =
  9. 9.6 × 19 =
  10. 10.39 × 99 =
  11. 11.14 × 99 =
  12. 12.10 × 29 =
  13. 13.12 × 49 =
  14. 14.4 × 29 =
  15. 15.17 × 99 =
  16. 16.14 × 9 =
  17. 17.12 × 9 =
  18. 18.14 × 49 =
  19. 19.10 × 29 =
  20. 20.6 × 9 =
  21. 21.14 × 99 =
  22. 22.12 × 29 =
  23. 23.12 × 19 =
  24. 24.35 × 99 =
  25. 25.13 × 49 =
  26. 26.12 × 99 =
  27. 27.8 × 49 =
  28. 28.6 × 98 =
  29. 29.20 × 98 =
  30. 30.26 × 98 =
  31. 31.11 × 29 =
  32. 32.3 × 9 =
  33. 33.34 × 98 =
  34. 34.11 × 19 =
  35. 35.30 × 98 =
  36. 36.4 × 29 =
  37. 37.9 × 29 =
  38. 38.11 × 9 =
  39. 39.4 × 9 =
  40. 40.13 × 49 =

Answer key

  1. 377
  2. 3332
  3. 116
  4. 36
  5. 90
  6. 245
  7. 261
  8. 117
  9. 114
  10. 3861
  11. 1386
  12. 290
  13. 588
  14. 116
  15. 1683
  16. 126
  17. 108
  18. 686
  19. 290
  20. 54
  21. 1386
  22. 348
  23. 228
  24. 3465
  25. 637
  26. 1188
  27. 392
  28. 588
  29. 1960
  30. 2548
  31. 319
  32. 27
  33. 3332
  34. 209
  35. 2940
  36. 116
  37. 261
  38. 99
  39. 36
  40. 637

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