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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 724 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.33.54 × 100 =
  2. 2.214.2 × 10 =
  3. 3.7.73 ÷ 10 =
  4. 4.26.95 × 1000 =
  5. 5.25.66 ÷ 100 =
  6. 6.12.06 ÷ 100 =
  7. 7.40.53 × 100 =
  8. 8.234.8 × 10 =
  9. 9.6.1 ÷ 100 =
  10. 10.18.9 ÷ 1000 =
  11. 11.23.43 ÷ 100 =
  12. 12.21.14 ÷ 10 =
  13. 13.18.61 ÷ 100 =
  14. 14.406.9 × 10 =
  15. 15.49.04 ÷ 100 =
  16. 16.10.29 × 100 =
  17. 17.48.27 ÷ 1000 =
  18. 18.8.51 × 100 =
  19. 19.0.64 ÷ 1000 =
  20. 20.1.01 × 10 =
  21. 21.2.92 ÷ 100 =
  22. 22.37.38 ÷ 100 =
  23. 23.35.1 × 10 =
  24. 24.20.37 ÷ 100 =
  25. 25.14.87 ÷ 10 =
  26. 26.35.66 ÷ 1000 =
  27. 27.1.23 ÷ 100 =
  28. 28.22.88 ÷ 10 =
  29. 29.33.68 × 100 =
  30. 30.465.6 ÷ 10 =
  31. 31.479.7 ÷ 10 =
  32. 32.39.37 × 1000 =
  33. 33.45.54 ÷ 1000 =
  34. 34.496.9 × 100 =
  35. 35.29.12 ÷ 100 =
  36. 36.29.21 × 1000 =
  37. 37.35.28 × 1000 =
  38. 38.15.55 ÷ 1000 =
  39. 39.313.3 ÷ 1000 =
  40. 40.236.2 × 100 =

Answer key

  1. 3354
  2. 2142
  3. 0.773
  4. 26950
  5. 0.2566
  6. 0.1206
  7. 4053
  8. 2348
  9. 0.061
  10. 0.0189
  11. 0.2343
  12. 2.114
  13. 0.1861
  14. 4069
  15. 0.4904
  16. 1029
  17. 0.04827
  18. 851
  19. 0.00064
  20. 10.1
  21. 0.0292
  22. 0.3738
  23. 351
  24. 0.2037
  25. 1.487
  26. 0.03566
  27. 0.0123
  28. 2.288
  29. 3368
  30. 46.56
  31. 47.97
  32. 39370
  33. 0.04554
  34. 49690
  35. 0.2912
  36. 29210
  37. 35280
  38. 0.01555
  39. 0.3133
  40. 23620

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