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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 649 · 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. 1.13 × 98 =
  2. 2.3 × 49 =
  3. 3.4 × 19 =
  4. 4.15 × 19 =
  5. 5.4 × 49 =
  6. 6.13 × 49 =
  7. 7.24 × 99 =
  8. 8.4 × 9 =
  9. 9.10 × 9 =
  10. 10.4 × 9 =
  11. 11.35 × 98 =
  12. 12.6 × 9 =
  13. 13.11 × 29 =
  14. 14.6 × 19 =
  15. 15.11 × 19 =
  16. 16.13 × 99 =
  17. 17.29 × 98 =
  18. 18.13 × 19 =
  19. 19.15 × 9 =
  20. 20.13 × 29 =
  21. 21.6 × 29 =
  22. 22.4 × 29 =
  23. 23.37 × 98 =
  24. 24.11 × 99 =
  25. 25.9 × 29 =
  26. 26.15 × 29 =
  27. 27.5 × 49 =
  28. 28.15 × 98 =
  29. 29.12 × 49 =
  30. 30.13 × 49 =
  31. 31.32 × 99 =
  32. 32.4 × 9 =
  33. 33.7 × 29 =
  34. 34.14 × 19 =
  35. 35.12 × 29 =
  36. 36.7 × 19 =
  37. 37.13 × 98 =
  38. 38.7 × 99 =
  39. 39.27 × 99 =
  40. 40.14 × 99 =

Answer key

  1. 1274
  2. 147
  3. 76
  4. 285
  5. 196
  6. 637
  7. 2376
  8. 36
  9. 90
  10. 36
  11. 3430
  12. 54
  13. 319
  14. 114
  15. 209
  16. 1287
  17. 2842
  18. 247
  19. 135
  20. 377
  21. 174
  22. 116
  23. 3626
  24. 1089
  25. 261
  26. 435
  27. 245
  28. 1470
  29. 588
  30. 637
  31. 3168
  32. 36
  33. 203
  34. 266
  35. 348
  36. 133
  37. 1274
  38. 693
  39. 2673
  40. 1386

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