← Round and adjust lesson New set →

Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 951 · 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. 1.10 × 9 =
  2. 2.8 × 9 =
  3. 3.3 × 19 =
  4. 4.7 × 9 =
  5. 5.7 × 29 =
  6. 6.5 × 9 =
  7. 7.7 × 99 =
  8. 8.13 × 49 =
  9. 9.13 × 49 =
  10. 10.32 × 99 =
  11. 11.6 × 98 =
  12. 12.12 × 49 =
  13. 13.11 × 99 =
  14. 14.13 × 98 =
  15. 15.20 × 99 =
  16. 16.14 × 29 =
  17. 17.39 × 98 =
  18. 18.12 × 19 =
  19. 19.9 × 9 =
  20. 20.5 × 19 =
  21. 21.11 × 98 =
  22. 22.4 × 9 =
  23. 23.15 × 49 =
  24. 24.3 × 49 =
  25. 25.15 × 99 =
  26. 26.10 × 29 =
  27. 27.8 × 9 =
  28. 28.5 × 29 =
  29. 29.27 × 98 =
  30. 30.5 × 49 =
  31. 31.9 × 49 =
  32. 32.14 × 49 =
  33. 33.15 × 49 =
  34. 34.12 × 99 =
  35. 35.28 × 98 =
  36. 36.13 × 29 =
  37. 37.11 × 98 =
  38. 38.5 × 19 =
  39. 39.5 × 98 =
  40. 40.13 × 29 =

Answer key

  1. 90
  2. 72
  3. 57
  4. 63
  5. 203
  6. 45
  7. 693
  8. 637
  9. 637
  10. 3168
  11. 588
  12. 588
  13. 1089
  14. 1274
  15. 1980
  16. 406
  17. 3822
  18. 228
  19. 81
  20. 95
  21. 1078
  22. 36
  23. 735
  24. 147
  25. 1485
  26. 290
  27. 72
  28. 145
  29. 2646
  30. 245
  31. 441
  32. 686
  33. 735
  34. 1188
  35. 2744
  36. 377
  37. 1078
  38. 95
  39. 490
  40. 377

Free tables & multiplication lessons, practice and worksheets at talentjr.in/multiplication-tables