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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 217 · 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. 1.286.1 × 100 =
  2. 2.60.4 ÷ 10 =
  3. 3.217.4 × 10 =
  4. 4.112.4 ÷ 100 =
  5. 5.34.69 ÷ 1000 =
  6. 6.45.27 ÷ 100 =
  7. 7.16.01 ÷ 10 =
  8. 8.348.7 ÷ 1000 =
  9. 9.26.59 ÷ 1000 =
  10. 10.261.2 ÷ 1000 =
  11. 11.205.2 × 10 =
  12. 12.345.9 ÷ 1000 =
  13. 13.23.1 ÷ 100 =
  14. 14.29.8 ÷ 10 =
  15. 15.32.8 ÷ 10 =
  16. 16.90.1 × 10 =
  17. 17.334.9 × 10 =
  18. 18.36.11 ÷ 1000 =
  19. 19.40.46 × 100 =
  20. 20.44.46 × 1000 =
  21. 21.170.7 ÷ 1000 =
  22. 22.5.09 × 1000 =
  23. 23.453.5 × 10 =
  24. 24.48.89 ÷ 10 =
  25. 25.29.4 ÷ 100 =
  26. 26.332.2 × 100 =
  27. 27.10.11 × 10 =
  28. 28.224.5 × 100 =
  29. 29.408.1 × 10 =
  30. 30.345.9 × 100 =
  31. 31.24.75 × 10 =
  32. 32.29.11 × 10 =
  33. 33.6.55 × 100 =
  34. 34.42.43 × 10 =
  35. 35.16.1 ÷ 100 =
  36. 36.24.07 × 100 =
  37. 37.33.1 × 1000 =
  38. 38.434.3 × 100 =
  39. 39.92.1 × 100 =
  40. 40.318.6 ÷ 10 =

Answer key

  1. 28610
  2. 6.04
  3. 2174
  4. 1.124
  5. 0.03469
  6. 0.4527
  7. 1.601
  8. 0.3487
  9. 0.02659
  10. 0.2612
  11. 2052
  12. 0.3459
  13. 0.231
  14. 2.98
  15. 3.28
  16. 901
  17. 3349
  18. 0.03611
  19. 4046
  20. 44460
  21. 0.1707
  22. 5090
  23. 4535
  24. 4.889
  25. 0.294
  26. 33220
  27. 101.1
  28. 22450
  29. 4081
  30. 34590
  31. 247.5
  32. 291.1
  33. 655
  34. 424.3
  35. 0.161
  36. 2407
  37. 33100
  38. 43430
  39. 9210
  40. 31.86

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