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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 784 · 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. 1.22 × 98 =
  2. 2.12 × 29 =
  3. 3.5 × 49 =
  4. 4.5 × 9 =
  5. 5.26 × 98 =
  6. 6.14 × 98 =
  7. 7.15 × 49 =
  8. 8.7 × 9 =
  9. 9.18 × 99 =
  10. 10.27 × 99 =
  11. 11.5 × 49 =
  12. 12.6 × 49 =
  13. 13.11 × 19 =
  14. 14.3 × 49 =
  15. 15.8 × 19 =
  16. 16.8 × 9 =
  17. 17.8 × 49 =
  18. 18.10 × 19 =
  19. 19.23 × 98 =
  20. 20.6 × 9 =
  21. 21.8 × 9 =
  22. 22.8 × 49 =
  23. 23.14 × 19 =
  24. 24.14 × 29 =
  25. 25.11 × 99 =
  26. 26.4 × 29 =
  27. 27.9 × 49 =
  28. 28.4 × 29 =
  29. 29.10 × 19 =
  30. 30.6 × 29 =
  31. 31.9 × 19 =
  32. 32.12 × 29 =
  33. 33.14 × 99 =
  34. 34.5 × 9 =
  35. 35.3 × 19 =
  36. 36.34 × 98 =
  37. 37.3 × 9 =
  38. 38.6 × 9 =
  39. 39.7 × 29 =
  40. 40.34 × 99 =

Answer key

  1. 2156
  2. 348
  3. 245
  4. 45
  5. 2548
  6. 1372
  7. 735
  8. 63
  9. 1782
  10. 2673
  11. 245
  12. 294
  13. 209
  14. 147
  15. 152
  16. 72
  17. 392
  18. 190
  19. 2254
  20. 54
  21. 72
  22. 392
  23. 266
  24. 406
  25. 1089
  26. 116
  27. 441
  28. 116
  29. 190
  30. 174
  31. 171
  32. 348
  33. 1386
  34. 45
  35. 57
  36. 3332
  37. 27
  38. 54
  39. 203
  40. 3366

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