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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 718 · 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 × 19 =
  2. 2.6 × 9 =
  3. 3.12 × 19 =
  4. 4.4 × 19 =
  5. 5.15 × 9 =
  6. 6.10 × 9 =
  7. 7.3 × 29 =
  8. 8.22 × 98 =
  9. 9.4 × 98 =
  10. 10.3 × 9 =
  11. 11.3 × 49 =
  12. 12.6 × 29 =
  13. 13.8 × 9 =
  14. 14.6 × 49 =
  15. 15.8 × 49 =
  16. 16.7 × 19 =
  17. 17.8 × 99 =
  18. 18.3 × 49 =
  19. 19.9 × 19 =
  20. 20.4 × 49 =
  21. 21.11 × 9 =
  22. 22.5 × 9 =
  23. 23.11 × 29 =
  24. 24.11 × 98 =
  25. 25.7 × 99 =
  26. 26.9 × 29 =
  27. 27.6 × 29 =
  28. 28.10 × 99 =
  29. 29.5 × 9 =
  30. 30.11 × 29 =
  31. 31.6 × 19 =
  32. 32.3 × 29 =
  33. 33.29 × 99 =
  34. 34.12 × 29 =
  35. 35.14 × 19 =
  36. 36.5 × 98 =
  37. 37.7 × 98 =
  38. 38.10 × 19 =
  39. 39.11 × 98 =
  40. 40.13 × 29 =

Answer key

  1. 247
  2. 54
  3. 228
  4. 76
  5. 135
  6. 90
  7. 87
  8. 2156
  9. 392
  10. 27
  11. 147
  12. 174
  13. 72
  14. 294
  15. 392
  16. 133
  17. 792
  18. 147
  19. 171
  20. 196
  21. 99
  22. 45
  23. 319
  24. 1078
  25. 693
  26. 261
  27. 174
  28. 990
  29. 45
  30. 319
  31. 114
  32. 87
  33. 2871
  34. 348
  35. 266
  36. 490
  37. 686
  38. 190
  39. 1078
  40. 377

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