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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 534 · 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. 1.33 × 99 =
  2. 2.7 × 9 =
  3. 3.15 × 98 =
  4. 4.5 × 19 =
  5. 5.14 × 29 =
  6. 6.7 × 49 =
  7. 7.7 × 99 =
  8. 8.36 × 99 =
  9. 9.9 × 98 =
  10. 10.10 × 49 =
  11. 11.15 × 9 =
  12. 12.3 × 49 =
  13. 13.12 × 19 =
  14. 14.11 × 19 =
  15. 15.3 × 49 =
  16. 16.4 × 19 =
  17. 17.10 × 9 =
  18. 18.6 × 19 =
  19. 19.5 × 29 =
  20. 20.22 × 99 =
  21. 21.4 × 9 =
  22. 22.14 × 49 =
  23. 23.30 × 99 =
  24. 24.13 × 49 =
  25. 25.8 × 29 =
  26. 26.12 × 99 =
  27. 27.10 × 98 =
  28. 28.5 × 49 =
  29. 29.15 × 9 =
  30. 30.15 × 19 =
  31. 31.6 × 9 =
  32. 32.14 × 19 =
  33. 33.9 × 29 =
  34. 34.4 × 49 =
  35. 35.6 × 49 =
  36. 36.6 × 19 =
  37. 37.9 × 9 =
  38. 38.12 × 9 =
  39. 39.28 × 99 =
  40. 40.4 × 9 =

Answer key

  1. 3267
  2. 63
  3. 1470
  4. 95
  5. 406
  6. 343
  7. 693
  8. 3564
  9. 882
  10. 490
  11. 135
  12. 147
  13. 228
  14. 209
  15. 147
  16. 76
  17. 90
  18. 114
  19. 145
  20. 2178
  21. 36
  22. 686
  23. 2970
  24. 637
  25. 232
  26. 1188
  27. 980
  28. 245
  29. 135
  30. 285
  31. 54
  32. 266
  33. 261
  34. 196
  35. 294
  36. 114
  37. 81
  38. 108
  39. 2772
  40. 36

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