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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 523 · 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. 1.5 × 19 =
  2. 2.9 × 19 =
  3. 3.13 × 19 =
  4. 4.12 × 98 =
  5. 5.23 × 99 =
  6. 6.5 × 49 =
  7. 7.11 × 49 =
  8. 8.3 × 9 =
  9. 9.3 × 49 =
  10. 10.15 × 29 =
  11. 11.13 × 9 =
  12. 12.13 × 9 =
  13. 13.11 × 49 =
  14. 14.15 × 29 =
  15. 15.23 × 98 =
  16. 16.10 × 19 =
  17. 17.8 × 49 =
  18. 18.11 × 29 =
  19. 19.4 × 98 =
  20. 20.13 × 9 =
  21. 21.12 × 9 =
  22. 22.3 × 19 =
  23. 23.11 × 98 =
  24. 24.9 × 9 =
  25. 25.13 × 19 =
  26. 26.30 × 99 =
  27. 27.4 × 19 =
  28. 28.15 × 9 =
  29. 29.3 × 19 =
  30. 30.14 × 9 =
  31. 31.12 × 98 =
  32. 32.35 × 98 =
  33. 33.5 × 49 =
  34. 34.11 × 9 =
  35. 35.7 × 98 =
  36. 36.34 × 98 =
  37. 37.13 × 19 =
  38. 38.11 × 49 =
  39. 39.13 × 98 =
  40. 40.12 × 19 =

Answer key

  1. 95
  2. 171
  3. 247
  4. 1176
  5. 2277
  6. 245
  7. 539
  8. 27
  9. 147
  10. 435
  11. 117
  12. 117
  13. 539
  14. 435
  15. 2254
  16. 190
  17. 392
  18. 319
  19. 392
  20. 117
  21. 108
  22. 57
  23. 1078
  24. 81
  25. 247
  26. 2970
  27. 76
  28. 135
  29. 57
  30. 126
  31. 1176
  32. 3430
  33. 245
  34. 99
  35. 686
  36. 3332
  37. 247
  38. 539
  39. 1274
  40. 228

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