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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 866 · 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. 1.31.5 ÷ 1000 =
  2. 2.32.79 × 1000 =
  3. 3.23.83 ÷ 1000 =
  4. 4.156.1 ÷ 1000 =
  5. 5.99.1 ÷ 100 =
  6. 6.28.22 ÷ 10 =
  7. 7.446.8 × 10 =
  8. 8.263.9 × 10 =
  9. 9.17.95 ÷ 10 =
  10. 10.208.1 × 1000 =
  11. 11.272.2 × 10 =
  12. 12.41.64 × 10 =
  13. 13.9.96 ÷ 10 =
  14. 14.47.31 × 10 =
  15. 15.422.3 × 10 =
  16. 16.372.1 ÷ 1000 =
  17. 17.17.36 ÷ 10 =
  18. 18.46.01 ÷ 10 =
  19. 19.472.7 × 1000 =
  20. 20.44.8 × 10 =
  21. 21.48.63 ÷ 1000 =
  22. 22.384.4 × 1000 =
  23. 23.35.41 × 1000 =
  24. 24.418.8 ÷ 10 =
  25. 25.45.7 ÷ 10 =
  26. 26.18.35 × 10 =
  27. 27.266.1 × 100 =
  28. 28.48.59 × 10 =
  29. 29.10.6 × 10 =
  30. 30.40.37 × 10 =
  31. 31.24.51 ÷ 10 =
  32. 32.468.1 × 100 =
  33. 33.29.61 ÷ 10 =
  34. 34.474.6 ÷ 10 =
  35. 35.32.86 ÷ 100 =
  36. 36.431.8 × 10 =
  37. 37.161.1 × 1000 =
  38. 38.199.9 × 1000 =
  39. 39.295.1 × 1000 =
  40. 40.419.9 ÷ 1000 =

Answer key

  1. 0.0315
  2. 32790
  3. 0.02383
  4. 0.1561
  5. 0.991
  6. 2.822
  7. 4468
  8. 2639
  9. 1.795
  10. 208100
  11. 2722
  12. 416.4
  13. 0.996
  14. 473.1
  15. 4223
  16. 0.3721
  17. 1.736
  18. 4.601
  19. 472700
  20. 448
  21. 0.04863
  22. 384400
  23. 35410
  24. 41.88
  25. 4.57
  26. 183.5
  27. 26610
  28. 485.9
  29. 106
  30. 403.7
  31. 2.451
  32. 46810
  33. 2.961
  34. 47.46
  35. 0.3286
  36. 4318
  37. 161100
  38. 199900
  39. 295100
  40. 0.4199

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