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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 651 · 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. 1.22 × 98 =
  2. 2.8 × 9 =
  3. 3.4 × 9 =
  4. 4.23 × 99 =
  5. 5.8 × 9 =
  6. 6.13 × 49 =
  7. 7.13 × 29 =
  8. 8.14 × 9 =
  9. 9.4 × 29 =
  10. 10.15 × 19 =
  11. 11.11 × 29 =
  12. 12.10 × 49 =
  13. 13.8 × 19 =
  14. 14.40 × 98 =
  15. 15.11 × 9 =
  16. 16.14 × 29 =
  17. 17.11 × 49 =
  18. 18.12 × 19 =
  19. 19.13 × 49 =
  20. 20.6 × 29 =
  21. 21.8 × 9 =
  22. 22.4 × 49 =
  23. 23.13 × 98 =
  24. 24.29 × 98 =
  25. 25.5 × 9 =
  26. 26.12 × 49 =
  27. 27.13 × 49 =
  28. 28.5 × 98 =
  29. 29.6 × 19 =
  30. 30.26 × 98 =
  31. 31.7 × 19 =
  32. 32.15 × 49 =
  33. 33.8 × 19 =
  34. 34.21 × 98 =
  35. 35.13 × 19 =
  36. 36.6 × 9 =
  37. 37.13 × 29 =
  38. 38.5 × 49 =
  39. 39.8 × 19 =
  40. 40.13 × 19 =

Answer key

  1. 2156
  2. 72
  3. 36
  4. 2277
  5. 72
  6. 637
  7. 377
  8. 126
  9. 116
  10. 285
  11. 319
  12. 490
  13. 152
  14. 3920
  15. 99
  16. 406
  17. 539
  18. 228
  19. 637
  20. 174
  21. 72
  22. 196
  23. 1274
  24. 2842
  25. 45
  26. 588
  27. 637
  28. 490
  29. 114
  30. 2548
  31. 133
  32. 735
  33. 152
  34. 2058
  35. 247
  36. 54
  37. 377
  38. 245
  39. 152
  40. 247

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