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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 849 · 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. 1.27.56 × 100 =
  2. 2.39.19 × 10 =
  3. 3.354.9 × 10 =
  4. 4.496.2 × 1000 =
  5. 5.1.47 × 1000 =
  6. 6.40.22 × 1000 =
  7. 7.342.3 ÷ 1000 =
  8. 8.30.18 × 100 =
  9. 9.490.7 ÷ 100 =
  10. 10.424.1 ÷ 10 =
  11. 11.448.7 × 10 =
  12. 12.1.77 × 100 =
  13. 13.39.61 ÷ 1000 =
  14. 14.35.65 ÷ 1000 =
  15. 15.90.1 × 10 =
  16. 16.170.9 × 10 =
  17. 17.155.1 × 10 =
  18. 18.3.46 × 100 =
  19. 19.405.2 × 10 =
  20. 20.17.96 ÷ 10 =
  21. 21.43.71 × 1000 =
  22. 22.10.46 × 100 =
  23. 23.449.6 × 10 =
  24. 24.149.4 ÷ 10 =
  25. 25.15.79 ÷ 1000 =
  26. 26.262.1 × 100 =
  27. 27.446.2 ÷ 10 =
  28. 28.4.62 × 10 =
  29. 29.44.8 ÷ 10 =
  30. 30.370.9 × 1000 =
  31. 31.157.8 × 100 =
  32. 32.416.6 ÷ 100 =
  33. 33.38.73 × 10 =
  34. 34.6.28 ÷ 10 =
  35. 35.210.1 × 10 =
  36. 36.380.3 ÷ 10 =
  37. 37.257.7 ÷ 10 =
  38. 38.406.5 × 10 =
  39. 39.277.3 × 1000 =
  40. 40.143.5 × 10 =

Answer key

  1. 2756
  2. 391.9
  3. 3549
  4. 496200
  5. 1470
  6. 40220
  7. 0.3423
  8. 3018
  9. 4.907
  10. 42.41
  11. 4487
  12. 177
  13. 0.03961
  14. 0.03565
  15. 901
  16. 1709
  17. 1551
  18. 346
  19. 4052
  20. 1.796
  21. 43710
  22. 1046
  23. 4496
  24. 14.94
  25. 0.01579
  26. 26210
  27. 44.62
  28. 46.2
  29. 4.48
  30. 370900
  31. 15780
  32. 4.166
  33. 387.3
  34. 0.628
  35. 2101
  36. 38.03
  37. 25.77
  38. 4065
  39. 277300
  40. 1435

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