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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 797 · 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 × 19 =
  2. 2.31 × 99 =
  3. 3.5 × 9 =
  4. 4.5 × 49 =
  5. 5.14 × 49 =
  6. 6.8 × 19 =
  7. 7.11 × 19 =
  8. 8.12 × 19 =
  9. 9.15 × 99 =
  10. 10.3 × 29 =
  11. 11.12 × 9 =
  12. 12.6 × 9 =
  13. 13.29 × 99 =
  14. 14.4 × 19 =
  15. 15.9 × 9 =
  16. 16.14 × 98 =
  17. 17.4 × 19 =
  18. 18.5 × 29 =
  19. 19.32 × 99 =
  20. 20.13 × 99 =
  21. 21.13 × 9 =
  22. 22.3 × 29 =
  23. 23.4 × 49 =
  24. 24.4 × 29 =
  25. 25.30 × 98 =
  26. 26.13 × 49 =
  27. 27.11 × 49 =
  28. 28.15 × 9 =
  29. 29.3 × 29 =
  30. 30.15 × 9 =
  31. 31.11 × 19 =
  32. 32.22 × 98 =
  33. 33.13 × 29 =
  34. 34.12 × 49 =
  35. 35.4 × 9 =
  36. 36.8 × 99 =
  37. 37.13 × 19 =
  38. 38.7 × 9 =
  39. 39.6 × 9 =
  40. 40.14 × 49 =

Answer key

  1. 209
  2. 3069
  3. 45
  4. 245
  5. 686
  6. 152
  7. 209
  8. 228
  9. 1485
  10. 87
  11. 108
  12. 54
  13. 2871
  14. 76
  15. 81
  16. 1372
  17. 76
  18. 145
  19. 3168
  20. 1287
  21. 117
  22. 87
  23. 196
  24. 116
  25. 2940
  26. 637
  27. 539
  28. 135
  29. 87
  30. 135
  31. 209
  32. 2156
  33. 377
  34. 588
  35. 36
  36. 792
  37. 247
  38. 63
  39. 54
  40. 686

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