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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 680 · 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. 1.21.7 × 1000 =
  2. 2.173.9 × 1000 =
  3. 3.99.6 ÷ 100 =
  4. 4.42.62 ÷ 1000 =
  5. 5.32.45 × 10 =
  6. 6.40.32 ÷ 10 =
  7. 7.4.57 × 10 =
  8. 8.416.9 × 100 =
  9. 9.3.1 ÷ 1000 =
  10. 10.38.22 × 1000 =
  11. 11.100.5 ÷ 10 =
  12. 12.4.65 × 100 =
  13. 13.6.13 × 1000 =
  14. 14.10.96 ÷ 10 =
  15. 15.8.77 ÷ 1000 =
  16. 16.10.59 × 1000 =
  17. 17.166.3 × 10 =
  18. 18.29.41 × 10 =
  19. 19.29.03 × 10 =
  20. 20.116.4 ÷ 10 =
  21. 21.402.2 × 10 =
  22. 22.38.88 ÷ 10 =
  23. 23.8.17 × 10 =
  24. 24.16.63 ÷ 100 =
  25. 25.384.2 × 1000 =
  26. 26.48.71 ÷ 1000 =
  27. 27.111.3 × 1000 =
  28. 28.44.16 × 100 =
  29. 29.435.3 × 100 =
  30. 30.5.21 ÷ 10 =
  31. 31.38.68 ÷ 1000 =
  32. 32.21.66 × 10 =
  33. 33.18.84 × 100 =
  34. 34.20.65 ÷ 100 =
  35. 35.12.03 × 10 =
  36. 36.24.38 × 1000 =
  37. 37.283.4 × 100 =
  38. 38.223.9 ÷ 1000 =
  39. 39.498.1 × 10 =
  40. 40.140.8 ÷ 10 =

Answer key

  1. 21700
  2. 173900
  3. 0.996
  4. 0.04262
  5. 324.5
  6. 4.032
  7. 45.7
  8. 41690
  9. 0.0031
  10. 38220
  11. 10.05
  12. 465
  13. 6130
  14. 1.096
  15. 0.00877
  16. 10590
  17. 1663
  18. 294.1
  19. 290.3
  20. 11.64
  21. 4022
  22. 3.888
  23. 81.7
  24. 0.1663
  25. 384200
  26. 0.04871
  27. 111300
  28. 4416
  29. 43530
  30. 0.521
  31. 0.03868
  32. 216.6
  33. 1884
  34. 0.2065
  35. 120.3
  36. 24380
  37. 28340
  38. 0.2239
  39. 4981
  40. 14.08

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