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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 973 · 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. 1.12 × 9 =
  2. 2.5 × 19 =
  3. 3.15 × 49 =
  4. 4.34 × 98 =
  5. 5.30 × 99 =
  6. 6.11 × 19 =
  7. 7.4 × 29 =
  8. 8.8 × 49 =
  9. 9.6 × 29 =
  10. 10.30 × 98 =
  11. 11.14 × 29 =
  12. 12.7 × 19 =
  13. 13.3 × 49 =
  14. 14.13 × 9 =
  15. 15.4 × 29 =
  16. 16.9 × 29 =
  17. 17.13 × 49 =
  18. 18.14 × 98 =
  19. 19.5 × 19 =
  20. 20.3 × 99 =
  21. 21.19 × 98 =
  22. 22.9 × 98 =
  23. 23.4 × 49 =
  24. 24.4 × 9 =
  25. 25.15 × 99 =
  26. 26.13 × 29 =
  27. 27.3 × 99 =
  28. 28.4 × 99 =
  29. 29.15 × 19 =
  30. 30.6 × 19 =
  31. 31.9 × 99 =
  32. 32.8 × 9 =
  33. 33.40 × 98 =
  34. 34.9 × 19 =
  35. 35.8 × 9 =
  36. 36.36 × 98 =
  37. 37.31 × 99 =
  38. 38.6 × 49 =
  39. 39.9 × 19 =
  40. 40.34 × 99 =

Answer key

  1. 108
  2. 95
  3. 735
  4. 3332
  5. 2970
  6. 209
  7. 116
  8. 392
  9. 174
  10. 2940
  11. 406
  12. 133
  13. 147
  14. 117
  15. 116
  16. 261
  17. 637
  18. 1372
  19. 95
  20. 297
  21. 1862
  22. 882
  23. 196
  24. 36
  25. 1485
  26. 377
  27. 297
  28. 396
  29. 285
  30. 114
  31. 891
  32. 72
  33. 3920
  34. 171
  35. 72
  36. 3528
  37. 3069
  38. 294
  39. 171
  40. 3366

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