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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 333 · 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. 2.13 × 19 =
  3. 3.36 × 98 =
  4. 4.3 × 49 =
  5. 5.3 × 19 =
  6. 6.4 × 9 =
  7. 7.6 × 29 =
  8. 8.3 × 9 =
  9. 9.24 × 99 =
  10. 10.7 × 19 =
  11. 11.4 × 29 =
  12. 12.11 × 9 =
  13. 13.12 × 9 =
  14. 14.30 × 98 =
  15. 15.3 × 9 =
  16. 16.14 × 19 =
  17. 17.4 × 9 =
  18. 18.4 × 49 =
  19. 19.9 × 29 =
  20. 20.9 × 9 =
  21. 21.10 × 49 =
  22. 22.5 × 9 =
  23. 23.4 × 9 =
  24. 24.6 × 49 =
  25. 25.10 × 19 =
  26. 26.5 × 29 =
  27. 27.15 × 19 =
  28. 28.13 × 29 =
  29. 29.6 × 19 =
  30. 30.5 × 9 =
  31. 31.3 × 9 =
  32. 32.30 × 99 =
  33. 33.7 × 9 =
  34. 34.10 × 9 =
  35. 35.4 × 9 =
  36. 36.13 × 29 =
  37. 37.17 × 98 =
  38. 38.16 × 98 =
  39. 39.4 × 49 =
  40. 40.29 × 98 =

Answer key

  1. 266
  2. 247
  3. 3528
  4. 147
  5. 57
  6. 36
  7. 174
  8. 27
  9. 2376
  10. 133
  11. 116
  12. 99
  13. 108
  14. 2940
  15. 27
  16. 266
  17. 36
  18. 196
  19. 261
  20. 81
  21. 490
  22. 45
  23. 36
  24. 294
  25. 190
  26. 145
  27. 285
  28. 377
  29. 114
  30. 45
  31. 27
  32. 2970
  33. 63
  34. 90
  35. 36
  36. 377
  37. 1666
  38. 1568
  39. 196
  40. 2842

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