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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 458 · 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. 1.25.92 × 1000 =
  2. 2.259.5 × 100 =
  3. 3.39.29 ÷ 10 =
  4. 4.31.49 ÷ 1000 =
  5. 5.450.5 × 10 =
  6. 6.15.56 ÷ 10 =
  7. 7.245.7 × 100 =
  8. 8.7.62 ÷ 100 =
  9. 9.14.27 ÷ 1000 =
  10. 10.95.8 × 100 =
  11. 11.32.29 ÷ 10 =
  12. 12.1.62 × 10 =
  13. 13.8.01 ÷ 10 =
  14. 14.474.9 ÷ 100 =
  15. 15.224.1 ÷ 1000 =
  16. 16.29.13 × 1000 =
  17. 17.27.02 × 100 =
  18. 18.45.72 ÷ 10 =
  19. 19.136.8 × 100 =
  20. 20.34.2 × 100 =
  21. 21.43.24 ÷ 1000 =
  22. 22.112.8 × 100 =
  23. 23.38.61 ÷ 1000 =
  24. 24.320.7 × 1000 =
  25. 25.184.6 × 10 =
  26. 26.360.7 × 10 =
  27. 27.423.7 × 100 =
  28. 28.170.7 ÷ 1000 =
  29. 29.152.5 ÷ 10 =
  30. 30.119.1 × 1000 =
  31. 31.113.8 × 100 =
  32. 32.140.1 ÷ 10 =
  33. 33.144.1 ÷ 10 =
  34. 34.25.91 × 100 =
  35. 35.321.7 × 100 =
  36. 36.14.72 × 1000 =
  37. 37.14.76 × 100 =
  38. 38.78.1 ÷ 1000 =
  39. 39.160.8 ÷ 10 =
  40. 40.49.21 ÷ 1000 =

Answer key

  1. 25920
  2. 25950
  3. 3.929
  4. 0.03149
  5. 4505
  6. 1.556
  7. 24570
  8. 0.0762
  9. 0.01427
  10. 9580
  11. 3.229
  12. 16.2
  13. 0.801
  14. 4.749
  15. 0.2241
  16. 29130
  17. 2702
  18. 4.572
  19. 13680
  20. 3420
  21. 0.04324
  22. 11280
  23. 0.03861
  24. 320700
  25. 1846
  26. 3607
  27. 42370
  28. 0.1707
  29. 15.25
  30. 119100
  31. 11380
  32. 14.01
  33. 14.41
  34. 2591
  35. 32170
  36. 14720
  37. 1476
  38. 0.0781
  39. 16.08
  40. 0.04921

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