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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 583 · 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. 1.389.5 × 100 =
  2. 2.8.15 ÷ 100 =
  3. 3.196.3 × 100 =
  4. 4.18.55 ÷ 10 =
  5. 5.79.1 × 1000 =
  6. 6.41.59 ÷ 100 =
  7. 7.32.75 × 10 =
  8. 8.33.5 × 1000 =
  9. 9.31.34 × 100 =
  10. 10.427.8 × 10 =
  11. 11.47.51 ÷ 1000 =
  12. 12.172.6 × 10 =
  13. 13.16.52 × 10 =
  14. 14.9.22 ÷ 10 =
  15. 15.422.6 ÷ 1000 =
  16. 16.136.1 × 1000 =
  17. 17.9.9 × 100 =
  18. 18.135.9 ÷ 100 =
  19. 19.462.7 × 1000 =
  20. 20.44.34 × 100 =
  21. 21.38.51 ÷ 1000 =
  22. 22.14.54 × 100 =
  23. 23.160.1 ÷ 1000 =
  24. 24.22.97 × 100 =
  25. 25.183.3 ÷ 100 =
  26. 26.38.71 × 100 =
  27. 27.326.3 ÷ 10 =
  28. 28.4.86 × 100 =
  29. 29.49.15 ÷ 100 =
  30. 30.47.01 × 10 =
  31. 31.14.32 ÷ 100 =
  32. 32.15.4 × 10 =
  33. 33.309.2 × 10 =
  34. 34.45.26 × 100 =
  35. 35.28.78 ÷ 100 =
  36. 36.8.69 ÷ 100 =
  37. 37.444.6 × 1000 =
  38. 38.236.3 ÷ 100 =
  39. 39.29.37 ÷ 100 =
  40. 40.366.4 ÷ 100 =

Answer key

  1. 38950
  2. 0.0815
  3. 19630
  4. 1.855
  5. 79100
  6. 0.4159
  7. 327.5
  8. 33500
  9. 3134
  10. 4278
  11. 0.04751
  12. 1726
  13. 165.2
  14. 0.922
  15. 0.4226
  16. 136100
  17. 990
  18. 1.359
  19. 462700
  20. 4434
  21. 0.03851
  22. 1454
  23. 0.1601
  24. 2297
  25. 1.833
  26. 3871
  27. 32.63
  28. 486
  29. 0.4915
  30. 470.1
  31. 0.1432
  32. 154
  33. 3092
  34. 4526
  35. 0.2878
  36. 0.0869
  37. 444600
  38. 2.363
  39. 0.2937
  40. 3.664

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