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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 705 · 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 × 29 =
  2. 2.8 × 29 =
  3. 3.11 × 9 =
  4. 4.14 × 9 =
  5. 5.15 × 9 =
  6. 6.15 × 29 =
  7. 7.14 × 29 =
  8. 8.8 × 19 =
  9. 9.10 × 49 =
  10. 10.4 × 49 =
  11. 11.7 × 9 =
  12. 12.4 × 19 =
  13. 13.12 × 29 =
  14. 14.6 × 9 =
  15. 15.10 × 99 =
  16. 16.27 × 99 =
  17. 17.11 × 19 =
  18. 18.9 × 49 =
  19. 19.4 × 9 =
  20. 20.25 × 99 =
  21. 21.10 × 99 =
  22. 22.5 × 29 =
  23. 23.17 × 98 =
  24. 24.8 × 49 =
  25. 25.25 × 98 =
  26. 26.8 × 9 =
  27. 27.15 × 29 =
  28. 28.29 × 99 =
  29. 29.20 × 98 =
  30. 30.9 × 9 =
  31. 31.5 × 49 =
  32. 32.10 × 29 =
  33. 33.25 × 99 =
  34. 34.7 × 49 =
  35. 35.5 × 9 =
  36. 36.29 × 99 =
  37. 37.4 × 19 =
  38. 38.7 × 99 =
  39. 39.4 × 29 =
  40. 40.13 × 19 =

Answer key

  1. 377
  2. 232
  3. 99
  4. 126
  5. 135
  6. 435
  7. 406
  8. 152
  9. 490
  10. 196
  11. 63
  12. 76
  13. 348
  14. 54
  15. 990
  16. 2673
  17. 209
  18. 441
  19. 36
  20. 2475
  21. 990
  22. 145
  23. 1666
  24. 392
  25. 2450
  26. 72
  27. 435
  28. 2871
  29. 1960
  30. 81
  31. 245
  32. 290
  33. 2475
  34. 343
  35. 45
  36. 2871
  37. 76
  38. 693
  39. 116
  40. 247

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