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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 567 · 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. 1.11 × 29 =
  2. 2.6 × 98 =
  3. 3.14 × 19 =
  4. 4.8 × 29 =
  5. 5.11 × 9 =
  6. 6.6 × 19 =
  7. 7.15 × 98 =
  8. 8.30 × 99 =
  9. 9.10 × 9 =
  10. 10.11 × 99 =
  11. 11.5 × 49 =
  12. 12.14 × 9 =
  13. 13.4 × 19 =
  14. 14.15 × 29 =
  15. 15.10 × 9 =
  16. 16.11 × 9 =
  17. 17.3 × 49 =
  18. 18.23 × 98 =
  19. 19.9 × 98 =
  20. 20.13 × 19 =
  21. 21.32 × 98 =
  22. 22.15 × 9 =
  23. 23.3 × 19 =
  24. 24.3 × 9 =
  25. 25.8 × 9 =
  26. 26.35 × 98 =
  27. 27.9 × 29 =
  28. 28.23 × 99 =
  29. 29.5 × 19 =
  30. 30.32 × 98 =
  31. 31.14 × 98 =
  32. 32.38 × 98 =
  33. 33.15 × 29 =
  34. 34.7 × 99 =
  35. 35.11 × 9 =
  36. 36.15 × 99 =
  37. 37.4 × 9 =
  38. 38.6 × 19 =
  39. 39.3 × 19 =
  40. 40.12 × 19 =

Answer key

  1. 319
  2. 588
  3. 266
  4. 232
  5. 99
  6. 114
  7. 1470
  8. 2970
  9. 90
  10. 1089
  11. 245
  12. 126
  13. 76
  14. 435
  15. 90
  16. 99
  17. 147
  18. 2254
  19. 882
  20. 247
  21. 3136
  22. 135
  23. 57
  24. 27
  25. 72
  26. 3430
  27. 261
  28. 2277
  29. 95
  30. 3136
  31. 1372
  32. 3724
  33. 435
  34. 693
  35. 99
  36. 1485
  37. 36
  38. 114
  39. 57
  40. 228

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