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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 73 · 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. 1.95.2 ÷ 100 =
  2. 2.33.06 × 1000 =
  3. 3.16.23 ÷ 10 =
  4. 4.368.2 × 10 =
  5. 5.3.92 ÷ 10 =
  6. 6.42.91 ÷ 10 =
  7. 7.340.7 × 100 =
  8. 8.325.6 ÷ 100 =
  9. 9.42.88 × 1000 =
  10. 10.225.4 × 1000 =
  11. 11.340.1 × 100 =
  12. 12.4.26 × 1000 =
  13. 13.47.35 × 1000 =
  14. 14.27.41 × 10 =
  15. 15.15.06 × 1000 =
  16. 16.249.8 ÷ 10 =
  17. 17.44.54 ÷ 100 =
  18. 18.479.5 × 1000 =
  19. 19.90.1 × 10 =
  20. 20.272.9 × 1000 =
  21. 21.21.77 ÷ 1000 =
  22. 22.40.89 × 1000 =
  23. 23.21.67 ÷ 1000 =
  24. 24.472.2 ÷ 1000 =
  25. 25.24.5 × 100 =
  26. 26.317.7 ÷ 10 =
  27. 27.490.5 ÷ 1000 =
  28. 28.313.1 × 100 =
  29. 29.32.61 ÷ 100 =
  30. 30.62.8 ÷ 100 =
  31. 31.394.3 × 1000 =
  32. 32.219.4 × 100 =
  33. 33.342.9 × 1000 =
  34. 34.34.63 × 10 =
  35. 35.193.8 ÷ 1000 =
  36. 36.4.97 × 10 =
  37. 37.2.34 ÷ 1000 =
  38. 38.35.21 ÷ 1000 =
  39. 39.307.7 × 10 =
  40. 40.424.2 ÷ 10 =

Answer key

  1. 0.952
  2. 33060
  3. 1.623
  4. 3682
  5. 0.392
  6. 4.291
  7. 34070
  8. 3.256
  9. 42880
  10. 225400
  11. 34010
  12. 4260
  13. 47350
  14. 274.1
  15. 15060
  16. 24.98
  17. 0.4454
  18. 479500
  19. 901
  20. 272900
  21. 0.02177
  22. 40890
  23. 0.02167
  24. 0.4722
  25. 2450
  26. 31.77
  27. 0.4905
  28. 31310
  29. 0.3261
  30. 0.628
  31. 394300
  32. 21940
  33. 342900
  34. 346.3
  35. 0.1938
  36. 49.7
  37. 0.00234
  38. 0.03521
  39. 3077
  40. 42.42

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