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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 357 · 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. 1.205.7 ÷ 1000 =
  2. 2.252.4 × 10 =
  3. 3.488.9 × 10 =
  4. 4.28.13 ÷ 100 =
  5. 5.38.49 ÷ 1000 =
  6. 6.160.4 ÷ 100 =
  7. 7.353.2 × 100 =
  8. 8.196.5 ÷ 10 =
  9. 9.4.27 × 1000 =
  10. 10.416.1 × 10 =
  11. 11.33.18 ÷ 10 =
  12. 12.250.7 ÷ 10 =
  13. 13.49.13 × 10 =
  14. 14.59.7 × 10 =
  15. 15.34.53 ÷ 100 =
  16. 16.44.51 ÷ 10 =
  17. 17.351.7 ÷ 10 =
  18. 18.144.5 ÷ 10 =
  19. 19.77.5 × 100 =
  20. 20.437.4 × 100 =
  21. 21.20.09 × 1000 =
  22. 22.165.4 ÷ 100 =
  23. 23.35.33 × 1000 =
  24. 24.205.1 × 100 =
  25. 25.23.21 × 10 =
  26. 26.43.84 × 10 =
  27. 27.489.8 ÷ 10 =
  28. 28.368.2 ÷ 1000 =
  29. 29.238.9 × 10 =
  30. 30.11.1 ÷ 10 =
  31. 31.217.4 ÷ 10 =
  32. 32.394.1 × 100 =
  33. 33.345.9 × 10 =
  34. 34.200.5 × 1000 =
  35. 35.32.22 × 10 =
  36. 36.15.2 × 10 =
  37. 37.48.44 ÷ 10 =
  38. 38.97.2 × 1000 =
  39. 39.28.78 × 100 =
  40. 40.432.1 ÷ 100 =

Answer key

  1. 0.2057
  2. 2524
  3. 4889
  4. 0.2813
  5. 0.03849
  6. 1.604
  7. 35320
  8. 19.65
  9. 4270
  10. 4161
  11. 3.318
  12. 25.07
  13. 491.3
  14. 597
  15. 0.3453
  16. 4.451
  17. 35.17
  18. 14.45
  19. 7750
  20. 43740
  21. 20090
  22. 1.654
  23. 35330
  24. 20510
  25. 232.1
  26. 438.4
  27. 48.98
  28. 0.3682
  29. 2389
  30. 1.11
  31. 21.74
  32. 39410
  33. 3459
  34. 200500
  35. 322.2
  36. 152
  37. 4.844
  38. 97200
  39. 2878
  40. 4.321

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