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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 337 · 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. 1.14 × 19 =
  2. 2.10 × 49 =
  3. 3.12 × 99 =
  4. 4.9 × 9 =
  5. 5.6 × 9 =
  6. 6.10 × 99 =
  7. 7.12 × 29 =
  8. 8.10 × 29 =
  9. 9.12 × 9 =
  10. 10.10 × 99 =
  11. 11.5 × 29 =
  12. 12.8 × 98 =
  13. 13.5 × 29 =
  14. 14.7 × 9 =
  15. 15.8 × 9 =
  16. 16.9 × 19 =
  17. 17.6 × 29 =
  18. 18.11 × 9 =
  19. 19.12 × 29 =
  20. 20.5 × 99 =
  21. 21.11 × 9 =
  22. 22.6 × 49 =
  23. 23.9 × 19 =
  24. 24.6 × 29 =
  25. 25.9 × 29 =
  26. 26.13 × 29 =
  27. 27.6 × 99 =
  28. 28.10 × 19 =
  29. 29.9 × 98 =
  30. 30.26 × 99 =
  31. 31.8 × 9 =
  32. 32.12 × 19 =
  33. 33.10 × 9 =
  34. 34.36 × 99 =
  35. 35.5 × 9 =
  36. 36.35 × 98 =
  37. 37.13 × 29 =
  38. 38.4 × 49 =
  39. 39.5 × 29 =
  40. 40.6 × 19 =

Answer key

  1. 266
  2. 490
  3. 1188
  4. 81
  5. 54
  6. 990
  7. 348
  8. 290
  9. 108
  10. 990
  11. 145
  12. 784
  13. 145
  14. 63
  15. 72
  16. 171
  17. 174
  18. 99
  19. 348
  20. 495
  21. 99
  22. 294
  23. 171
  24. 174
  25. 261
  26. 377
  27. 594
  28. 190
  29. 882
  30. 2574
  31. 72
  32. 228
  33. 90
  34. 3564
  35. 45
  36. 3430
  37. 377
  38. 196
  39. 145
  40. 114

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