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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 132 · 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 × 98 =
  2. 2.6 × 98 =
  3. 3.9 × 9 =
  4. 4.4 × 29 =
  5. 5.7 × 49 =
  6. 6.14 × 49 =
  7. 7.13 × 29 =
  8. 8.10 × 49 =
  9. 9.8 × 9 =
  10. 10.5 × 98 =
  11. 11.38 × 99 =
  12. 12.13 × 29 =
  13. 13.9 × 19 =
  14. 14.3 × 19 =
  15. 15.4 × 9 =
  16. 16.33 × 99 =
  17. 17.5 × 98 =
  18. 18.8 × 99 =
  19. 19.5 × 9 =
  20. 20.12 × 9 =
  21. 21.12 × 19 =
  22. 22.32 × 99 =
  23. 23.12 × 49 =
  24. 24.4 × 19 =
  25. 25.10 × 9 =
  26. 26.8 × 99 =
  27. 27.4 × 19 =
  28. 28.40 × 99 =
  29. 29.9 × 29 =
  30. 30.35 × 99 =
  31. 31.11 × 9 =
  32. 32.11 × 49 =
  33. 33.9 × 29 =
  34. 34.10 × 99 =
  35. 35.13 × 19 =
  36. 36.6 × 29 =
  37. 37.11 × 9 =
  38. 38.14 × 9 =
  39. 39.11 × 19 =
  40. 40.12 × 9 =

Answer key

  1. 1176
  2. 588
  3. 81
  4. 116
  5. 343
  6. 686
  7. 377
  8. 490
  9. 72
  10. 490
  11. 3762
  12. 377
  13. 171
  14. 57
  15. 36
  16. 3267
  17. 490
  18. 792
  19. 45
  20. 108
  21. 228
  22. 3168
  23. 588
  24. 76
  25. 90
  26. 792
  27. 76
  28. 3960
  29. 261
  30. 3465
  31. 99
  32. 539
  33. 261
  34. 990
  35. 247
  36. 174
  37. 99
  38. 126
  39. 209
  40. 108

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