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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 914 · 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. 1.4 × 49 =
  2. 2.15 × 49 =
  3. 3.6 × 19 =
  4. 4.6 × 9 =
  5. 5.14 × 49 =
  6. 6.4 × 99 =
  7. 7.15 × 29 =
  8. 8.11 × 9 =
  9. 9.11 × 98 =
  10. 10.14 × 9 =
  11. 11.8 × 49 =
  12. 12.12 × 99 =
  13. 13.8 × 29 =
  14. 14.7 × 9 =
  15. 15.9 × 19 =
  16. 16.15 × 49 =
  17. 17.35 × 99 =
  18. 18.13 × 49 =
  19. 19.7 × 29 =
  20. 20.8 × 29 =
  21. 21.13 × 98 =
  22. 22.3 × 19 =
  23. 23.7 × 29 =
  24. 24.5 × 99 =
  25. 25.26 × 98 =
  26. 26.12 × 19 =
  27. 27.35 × 98 =
  28. 28.5 × 9 =
  29. 29.6 × 29 =
  30. 30.18 × 98 =
  31. 31.4 × 19 =
  32. 32.30 × 99 =
  33. 33.6 × 49 =
  34. 34.22 × 98 =
  35. 35.13 × 29 =
  36. 36.12 × 9 =
  37. 37.4 × 9 =
  38. 38.4 × 99 =
  39. 39.4 × 9 =
  40. 40.13 × 49 =

Answer key

  1. 196
  2. 735
  3. 114
  4. 54
  5. 686
  6. 396
  7. 435
  8. 99
  9. 1078
  10. 126
  11. 392
  12. 1188
  13. 232
  14. 63
  15. 171
  16. 735
  17. 3465
  18. 637
  19. 203
  20. 232
  21. 1274
  22. 57
  23. 203
  24. 495
  25. 2548
  26. 228
  27. 3430
  28. 45
  29. 174
  30. 1764
  31. 76
  32. 2970
  33. 294
  34. 2156
  35. 377
  36. 108
  37. 36
  38. 396
  39. 36
  40. 637

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