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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 634 · 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. 1.4.74 ÷ 100 =
  2. 2.42.3 × 10 =
  3. 3.305.1 × 1000 =
  4. 4.134.2 × 1000 =
  5. 5.203.1 ÷ 10 =
  6. 6.47.92 ÷ 10 =
  7. 7.432.5 ÷ 100 =
  8. 8.486.1 × 10 =
  9. 9.177.1 × 100 =
  10. 10.447.3 ÷ 10 =
  11. 11.285.7 × 100 =
  12. 12.0.85 × 10 =
  13. 13.0.15 ÷ 10 =
  14. 14.434.2 × 10 =
  15. 15.27.53 × 100 =
  16. 16.50.4 ÷ 10 =
  17. 17.413.7 × 1000 =
  18. 18.49.04 × 100 =
  19. 19.31.45 ÷ 100 =
  20. 20.35.19 × 1000 =
  21. 21.204.5 ÷ 10 =
  22. 22.39.28 × 10 =
  23. 23.24.49 ÷ 100 =
  24. 24.373.5 ÷ 1000 =
  25. 25.7.29 × 1000 =
  26. 26.2.44 × 100 =
  27. 27.151.7 × 10 =
  28. 28.11.31 ÷ 1000 =
  29. 29.361.7 ÷ 1000 =
  30. 30.18.62 × 100 =
  31. 31.24.01 × 10 =
  32. 32.30.93 × 10 =
  33. 33.11.58 ÷ 10 =
  34. 34.421.8 × 10 =
  35. 35.486.5 × 100 =
  36. 36.170.4 ÷ 100 =
  37. 37.26.03 ÷ 1000 =
  38. 38.29.06 × 10 =
  39. 39.456.5 × 10 =
  40. 40.343.5 ÷ 100 =

Answer key

  1. 0.0474
  2. 423
  3. 305100
  4. 134200
  5. 20.31
  6. 4.792
  7. 4.325
  8. 4861
  9. 17710
  10. 44.73
  11. 28570
  12. 8.5
  13. 0.015
  14. 4342
  15. 2753
  16. 5.04
  17. 413700
  18. 4904
  19. 0.3145
  20. 35190
  21. 20.45
  22. 392.8
  23. 0.2449
  24. 0.3735
  25. 7290
  26. 244
  27. 1517
  28. 0.01131
  29. 0.3617
  30. 1862
  31. 240.1
  32. 309.3
  33. 1.158
  34. 4218
  35. 48650
  36. 1.704
  37. 0.02603
  38. 290.6
  39. 4565
  40. 3.435

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