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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 913 · 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 × 99 =
  2. 2.6 × 49 =
  3. 3.8 × 19 =
  4. 4.13 × 29 =
  5. 5.17 × 99 =
  6. 6.10 × 29 =
  7. 7.6 × 29 =
  8. 8.3 × 49 =
  9. 9.7 × 49 =
  10. 10.5 × 29 =
  11. 11.20 × 98 =
  12. 12.5 × 19 =
  13. 13.14 × 29 =
  14. 14.6 × 49 =
  15. 15.14 × 49 =
  16. 16.6 × 29 =
  17. 17.5 × 49 =
  18. 18.38 × 99 =
  19. 19.13 × 9 =
  20. 20.4 × 29 =
  21. 21.25 × 99 =
  22. 22.4 × 9 =
  23. 23.23 × 99 =
  24. 24.6 × 49 =
  25. 25.11 × 98 =
  26. 26.13 × 49 =
  27. 27.6 × 49 =
  28. 28.36 × 98 =
  29. 29.9 × 29 =
  30. 30.6 × 49 =
  31. 31.13 × 19 =
  32. 32.4 × 49 =
  33. 33.4 × 49 =
  34. 34.34 × 99 =
  35. 35.14 × 29 =
  36. 36.5 × 49 =
  37. 37.13 × 19 =
  38. 38.8 × 98 =
  39. 39.8 × 49 =
  40. 40.9 × 9 =

Answer key

  1. 693
  2. 294
  3. 152
  4. 377
  5. 1683
  6. 290
  7. 174
  8. 147
  9. 343
  10. 145
  11. 1960
  12. 95
  13. 406
  14. 294
  15. 686
  16. 174
  17. 245
  18. 3762
  19. 117
  20. 116
  21. 2475
  22. 36
  23. 2277
  24. 294
  25. 1078
  26. 637
  27. 294
  28. 3528
  29. 261
  30. 294
  31. 247
  32. 196
  33. 196
  34. 3366
  35. 406
  36. 245
  37. 247
  38. 784
  39. 392
  40. 81

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