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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 752 · 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. 2.11 × 9 =
  3. 3.12 × 98 =
  4. 4.15 × 49 =
  5. 5.9 × 9 =
  6. 6.11 × 9 =
  7. 7.10 × 19 =
  8. 8.5 × 98 =
  9. 9.5 × 9 =
  10. 10.9 × 9 =
  11. 11.8 × 98 =
  12. 12.6 × 19 =
  13. 13.6 × 49 =
  14. 14.10 × 98 =
  15. 15.13 × 29 =
  16. 16.14 × 99 =
  17. 17.14 × 9 =
  18. 18.4 × 29 =
  19. 19.10 × 19 =
  20. 20.7 × 29 =
  21. 21.3 × 29 =
  22. 22.15 × 98 =
  23. 23.23 × 99 =
  24. 24.11 × 19 =
  25. 25.10 × 9 =
  26. 26.12 × 49 =
  27. 27.6 × 9 =
  28. 28.37 × 99 =
  29. 29.10 × 9 =
  30. 30.14 × 9 =
  31. 31.10 × 19 =
  32. 32.25 × 99 =
  33. 33.6 × 29 =
  34. 34.7 × 49 =
  35. 35.12 × 99 =
  36. 36.11 × 29 =
  37. 37.7 × 9 =
  38. 38.10 × 98 =
  39. 39.5 × 19 =
  40. 40.12 × 9 =

Answer key

  1. 196
  2. 99
  3. 1176
  4. 735
  5. 81
  6. 99
  7. 190
  8. 490
  9. 45
  10. 81
  11. 784
  12. 114
  13. 294
  14. 980
  15. 377
  16. 1386
  17. 126
  18. 116
  19. 190
  20. 203
  21. 87
  22. 1470
  23. 2277
  24. 209
  25. 90
  26. 588
  27. 54
  28. 3663
  29. 90
  30. 126
  31. 190
  32. 2475
  33. 174
  34. 343
  35. 1188
  36. 319
  37. 63
  38. 980
  39. 95
  40. 108

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