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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 2 · 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. 1.15 × 19 =
  2. 2.12 × 19 =
  3. 3.4 × 49 =
  4. 4.15 × 9 =
  5. 5.14 × 19 =
  6. 6.14 × 49 =
  7. 7.14 × 9 =
  8. 8.12 × 9 =
  9. 9.13 × 19 =
  10. 10.25 × 99 =
  11. 11.4 × 9 =
  12. 12.13 × 29 =
  13. 13.6 × 49 =
  14. 14.5 × 19 =
  15. 15.6 × 9 =
  16. 16.3 × 19 =
  17. 17.3 × 99 =
  18. 18.8 × 19 =
  19. 19.5 × 19 =
  20. 20.12 × 49 =
  21. 21.35 × 99 =
  22. 22.11 × 99 =
  23. 23.21 × 99 =
  24. 24.13 × 19 =
  25. 25.19 × 98 =
  26. 26.13 × 29 =
  27. 27.3 × 49 =
  28. 28.33 × 98 =
  29. 29.14 × 19 =
  30. 30.10 × 49 =
  31. 31.9 × 9 =
  32. 32.11 × 9 =
  33. 33.7 × 19 =
  34. 34.6 × 98 =
  35. 35.6 × 29 =
  36. 36.15 × 29 =
  37. 37.3 × 19 =
  38. 38.11 × 9 =
  39. 39.10 × 99 =
  40. 40.25 × 98 =

Answer key

  1. 285
  2. 228
  3. 196
  4. 135
  5. 266
  6. 686
  7. 126
  8. 108
  9. 247
  10. 2475
  11. 36
  12. 377
  13. 294
  14. 95
  15. 54
  16. 57
  17. 297
  18. 152
  19. 95
  20. 588
  21. 3465
  22. 1089
  23. 2079
  24. 247
  25. 1862
  26. 377
  27. 147
  28. 3234
  29. 266
  30. 490
  31. 81
  32. 99
  33. 133
  34. 588
  35. 174
  36. 435
  37. 57
  38. 99
  39. 990
  40. 2450

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