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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 167 · 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. 1.40 × 98 =
  2. 2.6 × 9 =
  3. 3.5 × 49 =
  4. 4.6 × 99 =
  5. 5.5 × 29 =
  6. 6.7 × 29 =
  7. 7.14 × 19 =
  8. 8.8 × 9 =
  9. 9.5 × 9 =
  10. 10.12 × 49 =
  11. 11.3 × 19 =
  12. 12.11 × 19 =
  13. 13.3 × 98 =
  14. 14.13 × 29 =
  15. 15.6 × 19 =
  16. 16.11 × 19 =
  17. 17.12 × 19 =
  18. 18.10 × 99 =
  19. 19.3 × 49 =
  20. 20.3 × 19 =
  21. 21.5 × 29 =
  22. 22.10 × 98 =
  23. 23.15 × 9 =
  24. 24.3 × 99 =
  25. 25.11 × 99 =
  26. 26.8 × 19 =
  27. 27.12 × 9 =
  28. 28.5 × 49 =
  29. 29.40 × 98 =
  30. 30.7 × 29 =
  31. 31.12 × 19 =
  32. 32.11 × 19 =
  33. 33.8 × 19 =
  34. 34.8 × 99 =
  35. 35.5 × 19 =
  36. 36.11 × 99 =
  37. 37.4 × 49 =
  38. 38.10 × 98 =
  39. 39.10 × 9 =
  40. 40.17 × 99 =

Answer key

  1. 3920
  2. 54
  3. 245
  4. 594
  5. 145
  6. 203
  7. 266
  8. 72
  9. 45
  10. 588
  11. 57
  12. 209
  13. 294
  14. 377
  15. 114
  16. 209
  17. 228
  18. 990
  19. 147
  20. 57
  21. 145
  22. 980
  23. 135
  24. 297
  25. 1089
  26. 152
  27. 108
  28. 245
  29. 3920
  30. 203
  31. 228
  32. 209
  33. 152
  34. 792
  35. 95
  36. 1089
  37. 196
  38. 980
  39. 90
  40. 1683

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