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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 775 · 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 × 9 =
  2. 2.7 × 49 =
  3. 3.5 × 19 =
  4. 4.6 × 98 =
  5. 5.5 × 49 =
  6. 6.34 × 98 =
  7. 7.8 × 9 =
  8. 8.12 × 19 =
  9. 9.16 × 99 =
  10. 10.6 × 49 =
  11. 11.6 × 9 =
  12. 12.13 × 29 =
  13. 13.15 × 9 =
  14. 14.28 × 98 =
  15. 15.5 × 49 =
  16. 16.3 × 9 =
  17. 17.12 × 99 =
  18. 18.12 × 49 =
  19. 19.3 × 19 =
  20. 20.4 × 9 =
  21. 21.10 × 9 =
  22. 22.14 × 49 =
  23. 23.13 × 49 =
  24. 24.9 × 98 =
  25. 25.11 × 19 =
  26. 26.13 × 9 =
  27. 27.12 × 99 =
  28. 28.23 × 98 =
  29. 29.9 × 29 =
  30. 30.24 × 99 =
  31. 31.7 × 49 =
  32. 32.6 × 29 =
  33. 33.14 × 9 =
  34. 34.15 × 19 =
  35. 35.5 × 9 =
  36. 36.15 × 19 =
  37. 37.15 × 19 =
  38. 38.5 × 49 =
  39. 39.13 × 19 =
  40. 40.4 × 19 =

Answer key

  1. 63
  2. 343
  3. 95
  4. 588
  5. 245
  6. 3332
  7. 72
  8. 228
  9. 1584
  10. 294
  11. 54
  12. 377
  13. 135
  14. 2744
  15. 245
  16. 27
  17. 1188
  18. 588
  19. 57
  20. 36
  21. 90
  22. 686
  23. 637
  24. 882
  25. 209
  26. 117
  27. 1188
  28. 2254
  29. 261
  30. 2376
  31. 343
  32. 174
  33. 126
  34. 285
  35. 45
  36. 285
  37. 285
  38. 245
  39. 247
  40. 76

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