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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 166 · 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. 1.29.32 × 10 =
  2. 2.459.5 × 100 =
  3. 3.51.7 × 1000 =
  4. 4.286.6 ÷ 100 =
  5. 5.220.3 ÷ 10 =
  6. 6.406.1 ÷ 100 =
  7. 7.343.4 × 10 =
  8. 8.323.2 × 10 =
  9. 9.459.1 ÷ 100 =
  10. 10.64.6 ÷ 10 =
  11. 11.203.9 × 100 =
  12. 12.56.8 × 10 =
  13. 13.31.38 × 1000 =
  14. 14.354.7 ÷ 100 =
  15. 15.64.5 ÷ 1000 =
  16. 16.12.83 × 10 =
  17. 17.491.1 × 1000 =
  18. 18.12.42 × 100 =
  19. 19.120.2 ÷ 1000 =
  20. 20.254.4 ÷ 10 =
  21. 21.41.88 × 100 =
  22. 22.470.9 × 1000 =
  23. 23.35.29 × 10 =
  24. 24.4.52 × 100 =
  25. 25.321.2 × 1000 =
  26. 26.23.83 ÷ 10 =
  27. 27.43.91 × 10 =
  28. 28.12.43 ÷ 100 =
  29. 29.491.3 × 10 =
  30. 30.35.53 ÷ 1000 =
  31. 31.43.98 × 10 =
  32. 32.27.1 × 100 =
  33. 33.3.51 × 100 =
  34. 34.2.63 ÷ 1000 =
  35. 35.4.22 ÷ 100 =
  36. 36.42.39 × 100 =
  37. 37.12.88 × 1000 =
  38. 38.49.57 ÷ 100 =
  39. 39.399.2 ÷ 1000 =
  40. 40.112.3 × 100 =

Answer key

  1. 293.2
  2. 45950
  3. 51700
  4. 2.866
  5. 22.03
  6. 4.061
  7. 3434
  8. 3232
  9. 4.591
  10. 6.46
  11. 20390
  12. 568
  13. 31380
  14. 3.547
  15. 0.0645
  16. 128.3
  17. 491100
  18. 1242
  19. 0.1202
  20. 25.44
  21. 4188
  22. 470900
  23. 352.9
  24. 452
  25. 321200
  26. 2.383
  27. 439.1
  28. 0.1243
  29. 4913
  30. 0.03553
  31. 439.8
  32. 2710
  33. 351
  34. 0.00263
  35. 0.0422
  36. 4239
  37. 12880
  38. 0.4957
  39. 0.3992
  40. 11230

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