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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 27 · 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. 2.4 × 49 =
  3. 3.14 × 29 =
  4. 4.7 × 9 =
  5. 5.4 × 29 =
  6. 6.5 × 19 =
  7. 7.6 × 29 =
  8. 8.7 × 49 =
  9. 9.12 × 29 =
  10. 10.5 × 29 =
  11. 11.14 × 49 =
  12. 12.14 × 19 =
  13. 13.35 × 99 =
  14. 14.5 × 9 =
  15. 15.13 × 29 =
  16. 16.13 × 49 =
  17. 17.19 × 98 =
  18. 18.20 × 98 =
  19. 19.7 × 9 =
  20. 20.6 × 19 =
  21. 21.18 × 98 =
  22. 22.11 × 49 =
  23. 23.8 × 49 =
  24. 24.8 × 49 =
  25. 25.4 × 49 =
  26. 26.13 × 98 =
  27. 27.13 × 49 =
  28. 28.6 × 19 =
  29. 29.27 × 99 =
  30. 30.10 × 49 =
  31. 31.3 × 49 =
  32. 32.16 × 99 =
  33. 33.39 × 98 =
  34. 34.11 × 9 =
  35. 35.4 × 19 =
  36. 36.13 × 19 =
  37. 37.7 × 9 =
  38. 38.10 × 19 =
  39. 39.13 × 29 =
  40. 40.3 × 49 =

Answer key

  1. 228
  2. 196
  3. 406
  4. 63
  5. 116
  6. 95
  7. 174
  8. 343
  9. 348
  10. 145
  11. 686
  12. 266
  13. 3465
  14. 45
  15. 377
  16. 637
  17. 1862
  18. 1960
  19. 63
  20. 114
  21. 1764
  22. 539
  23. 392
  24. 392
  25. 196
  26. 1274
  27. 637
  28. 114
  29. 2673
  30. 490
  31. 147
  32. 1584
  33. 3822
  34. 99
  35. 76
  36. 247
  37. 63
  38. 190
  39. 377
  40. 147

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