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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 924 · 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. 1.10 × 19 =
  2. 2.10 × 98 =
  3. 3.4 × 19 =
  4. 4.8 × 29 =
  5. 5.11 × 19 =
  6. 6.3 × 99 =
  7. 7.10 × 49 =
  8. 8.13 × 19 =
  9. 9.12 × 9 =
  10. 10.11 × 98 =
  11. 11.6 × 49 =
  12. 12.10 × 9 =
  13. 13.23 × 98 =
  14. 14.8 × 9 =
  15. 15.3 × 49 =
  16. 16.26 × 98 =
  17. 17.5 × 9 =
  18. 18.5 × 9 =
  19. 19.15 × 19 =
  20. 20.14 × 9 =
  21. 21.4 × 9 =
  22. 22.13 × 29 =
  23. 23.7 × 9 =
  24. 24.14 × 19 =
  25. 25.13 × 19 =
  26. 26.11 × 9 =
  27. 27.7 × 19 =
  28. 28.14 × 49 =
  29. 29.5 × 49 =
  30. 30.15 × 49 =
  31. 31.28 × 98 =
  32. 32.4 × 49 =
  33. 33.19 × 99 =
  34. 34.9 × 99 =
  35. 35.4 × 98 =
  36. 36.10 × 99 =
  37. 37.9 × 9 =
  38. 38.6 × 98 =
  39. 39.3 × 19 =
  40. 40.36 × 99 =

Answer key

  1. 190
  2. 980
  3. 76
  4. 232
  5. 209
  6. 297
  7. 490
  8. 247
  9. 108
  10. 1078
  11. 294
  12. 90
  13. 2254
  14. 72
  15. 147
  16. 2548
  17. 45
  18. 45
  19. 285
  20. 126
  21. 36
  22. 377
  23. 63
  24. 266
  25. 247
  26. 99
  27. 133
  28. 686
  29. 245
  30. 735
  31. 2744
  32. 196
  33. 1881
  34. 891
  35. 392
  36. 990
  37. 81
  38. 588
  39. 57
  40. 3564

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