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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 958 · 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. 1.30 × 98 =
  2. 2.14 × 29 =
  3. 3.15 × 9 =
  4. 4.10 × 29 =
  5. 5.15 × 49 =
  6. 6.6 × 49 =
  7. 7.6 × 99 =
  8. 8.12 × 9 =
  9. 9.15 × 9 =
  10. 10.14 × 49 =
  11. 11.10 × 9 =
  12. 12.5 × 99 =
  13. 13.11 × 19 =
  14. 14.6 × 9 =
  15. 15.5 × 19 =
  16. 16.14 × 9 =
  17. 17.8 × 29 =
  18. 18.36 × 99 =
  19. 19.6 × 9 =
  20. 20.5 × 19 =
  21. 21.10 × 99 =
  22. 22.3 × 99 =
  23. 23.8 × 19 =
  24. 24.12 × 49 =
  25. 25.15 × 29 =
  26. 26.3 × 99 =
  27. 27.21 × 98 =
  28. 28.5 × 49 =
  29. 29.12 × 19 =
  30. 30.13 × 49 =
  31. 31.6 × 19 =
  32. 32.14 × 19 =
  33. 33.12 × 19 =
  34. 34.13 × 49 =
  35. 35.21 × 99 =
  36. 36.10 × 19 =
  37. 37.11 × 9 =
  38. 38.28 × 98 =
  39. 39.6 × 99 =
  40. 40.3 × 49 =

Answer key

  1. 2940
  2. 406
  3. 135
  4. 290
  5. 735
  6. 294
  7. 594
  8. 108
  9. 135
  10. 686
  11. 90
  12. 495
  13. 209
  14. 54
  15. 95
  16. 126
  17. 232
  18. 3564
  19. 54
  20. 95
  21. 990
  22. 297
  23. 152
  24. 588
  25. 435
  26. 297
  27. 2058
  28. 245
  29. 228
  30. 637
  31. 114
  32. 266
  33. 228
  34. 637
  35. 2079
  36. 190
  37. 99
  38. 2744
  39. 594
  40. 147

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