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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 566 · 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. 1.34.51 ÷ 100 =
  2. 2.39.38 × 10 =
  3. 3.210.3 × 1000 =
  4. 4.46.74 ÷ 10 =
  5. 5.114.3 × 1000 =
  6. 6.49.15 × 100 =
  7. 7.335.3 × 100 =
  8. 8.28.53 × 100 =
  9. 9.37.84 ÷ 1000 =
  10. 10.22.01 × 100 =
  11. 11.238.2 × 100 =
  12. 12.10.35 × 100 =
  13. 13.9.11 × 1000 =
  14. 14.45.6 × 10 =
  15. 15.8.76 × 100 =
  16. 16.210.6 × 10 =
  17. 17.49.87 × 1000 =
  18. 18.129.6 × 10 =
  19. 19.212.2 × 10 =
  20. 20.105.9 ÷ 10 =
  21. 21.402.3 ÷ 1000 =
  22. 22.113.4 ÷ 10 =
  23. 23.22.4 × 100 =
  24. 24.94.7 × 1000 =
  25. 25.38.11 × 10 =
  26. 26.296.4 × 1000 =
  27. 27.49.9 × 10 =
  28. 28.340.2 × 100 =
  29. 29.3.78 × 1000 =
  30. 30.144.4 ÷ 100 =
  31. 31.263.1 ÷ 10 =
  32. 32.477.5 × 1000 =
  33. 33.74.9 ÷ 1000 =
  34. 34.29.01 ÷ 1000 =
  35. 35.368.3 ÷ 100 =
  36. 36.44.96 × 1000 =
  37. 37.16.98 ÷ 10 =
  38. 38.139.7 × 10 =
  39. 39.374.3 × 100 =
  40. 40.9.7 ÷ 1000 =

Answer key

  1. 0.3451
  2. 393.8
  3. 210300
  4. 4.674
  5. 114300
  6. 4915
  7. 33530
  8. 2853
  9. 0.03784
  10. 2201
  11. 23820
  12. 1035
  13. 9110
  14. 456
  15. 876
  16. 2106
  17. 49870
  18. 1296
  19. 2122
  20. 10.59
  21. 0.4023
  22. 11.34
  23. 2240
  24. 94700
  25. 381.1
  26. 296400
  27. 499
  28. 34020
  29. 3780
  30. 1.444
  31. 26.31
  32. 477500
  33. 0.0749
  34. 0.02901
  35. 3.683
  36. 44960
  37. 1.698
  38. 1397
  39. 37430
  40. 0.0097

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