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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 224 · 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. 1.7 × 19 =
  2. 2.7 × 99 =
  3. 3.3 × 9 =
  4. 4.7 × 9 =
  5. 5.32 × 98 =
  6. 6.8 × 19 =
  7. 7.4 × 19 =
  8. 8.9 × 98 =
  9. 9.23 × 99 =
  10. 10.14 × 9 =
  11. 11.6 × 19 =
  12. 12.6 × 29 =
  13. 13.8 × 29 =
  14. 14.11 × 49 =
  15. 15.8 × 9 =
  16. 16.14 × 19 =
  17. 17.6 × 29 =
  18. 18.6 × 9 =
  19. 19.7 × 9 =
  20. 20.14 × 49 =
  21. 21.3 × 49 =
  22. 22.5 × 29 =
  23. 23.14 × 19 =
  24. 24.27 × 98 =
  25. 25.13 × 19 =
  26. 26.10 × 49 =
  27. 27.7 × 49 =
  28. 28.15 × 49 =
  29. 29.13 × 19 =
  30. 30.15 × 29 =
  31. 31.5 × 29 =
  32. 32.8 × 49 =
  33. 33.37 × 98 =
  34. 34.12 × 19 =
  35. 35.9 × 9 =
  36. 36.5 × 9 =
  37. 37.15 × 29 =
  38. 38.21 × 99 =
  39. 39.6 × 49 =
  40. 40.4 × 19 =

Answer key

  1. 133
  2. 693
  3. 27
  4. 63
  5. 3136
  6. 152
  7. 76
  8. 882
  9. 2277
  10. 126
  11. 114
  12. 174
  13. 232
  14. 539
  15. 72
  16. 266
  17. 174
  18. 54
  19. 63
  20. 686
  21. 147
  22. 145
  23. 266
  24. 2646
  25. 247
  26. 490
  27. 343
  28. 735
  29. 247
  30. 435
  31. 145
  32. 392
  33. 3626
  34. 228
  35. 81
  36. 45
  37. 435
  38. 2079
  39. 294
  40. 76

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