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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 454 · 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. 1.496.8 × 100 =
  2. 2.84.2 × 1000 =
  3. 3.179.7 ÷ 10 =
  4. 4.231.6 ÷ 1000 =
  5. 5.32.26 ÷ 10 =
  6. 6.41.81 ÷ 10 =
  7. 7.114.6 ÷ 1000 =
  8. 8.2.2 × 100 =
  9. 9.458.3 ÷ 10 =
  10. 10.39.74 × 10 =
  11. 11.110.3 ÷ 100 =
  12. 12.283.6 ÷ 100 =
  13. 13.62.6 × 10 =
  14. 14.134.3 ÷ 10 =
  15. 15.57.2 ÷ 100 =
  16. 16.89.1 × 1000 =
  17. 17.20.87 × 10 =
  18. 18.48.32 × 10 =
  19. 19.21.96 ÷ 10 =
  20. 20.11.15 × 10 =
  21. 21.316.1 × 1000 =
  22. 22.18.81 × 1000 =
  23. 23.44.1 ÷ 10 =
  24. 24.203.1 ÷ 1000 =
  25. 25.45.41 × 10 =
  26. 26.0.93 ÷ 10 =
  27. 27.15.75 × 100 =
  28. 28.42.8 ÷ 100 =
  29. 29.145.4 ÷ 10 =
  30. 30.5.85 × 100 =
  31. 31.244.3 × 1000 =
  32. 32.3.28 × 100 =
  33. 33.284.4 × 100 =
  34. 34.49.21 × 10 =
  35. 35.37.3 × 10 =
  36. 36.37.49 × 100 =
  37. 37.242.8 ÷ 10 =
  38. 38.16.3 × 10 =
  39. 39.479.8 ÷ 1000 =
  40. 40.271.3 ÷ 100 =

Answer key

  1. 49680
  2. 84200
  3. 17.97
  4. 0.2316
  5. 3.226
  6. 4.181
  7. 0.1146
  8. 220
  9. 45.83
  10. 397.4
  11. 1.103
  12. 2.836
  13. 626
  14. 13.43
  15. 0.572
  16. 89100
  17. 208.7
  18. 483.2
  19. 2.196
  20. 111.5
  21. 316100
  22. 18810
  23. 4.41
  24. 0.2031
  25. 454.1
  26. 0.093
  27. 1575
  28. 0.428
  29. 14.54
  30. 585
  31. 244300
  32. 328
  33. 28440
  34. 492.1
  35. 373
  36. 3749
  37. 24.28
  38. 163
  39. 0.4798
  40. 2.713

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