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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 993 · 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. 1.350.3 × 1000 =
  2. 2.33.63 ÷ 1000 =
  3. 3.456.2 × 10 =
  4. 4.39.77 × 10 =
  5. 5.44.05 ÷ 10 =
  6. 6.14.22 × 100 =
  7. 7.475.9 ÷ 100 =
  8. 8.18.11 × 1000 =
  9. 9.2.22 ÷ 1000 =
  10. 10.178.1 × 1000 =
  11. 11.93.7 ÷ 10 =
  12. 12.375.1 × 100 =
  13. 13.24.53 ÷ 1000 =
  14. 14.2.68 × 1000 =
  15. 15.41.92 ÷ 1000 =
  16. 16.16.38 × 1000 =
  17. 17.7.51 × 10 =
  18. 18.298.3 × 1000 =
  19. 19.16.33 × 10 =
  20. 20.15.22 × 1000 =
  21. 21.34.94 × 10 =
  22. 22.48.35 × 10 =
  23. 23.107.8 × 10 =
  24. 24.13.73 ÷ 10 =
  25. 25.16.6 ÷ 10 =
  26. 26.0.52 × 100 =
  27. 27.44.48 ÷ 100 =
  28. 28.46.2 × 10 =
  29. 29.317.8 × 10 =
  30. 30.16.09 × 1000 =
  31. 31.5.08 × 100 =
  32. 32.22.1 × 10 =
  33. 33.33.91 × 1000 =
  34. 34.147.6 × 1000 =
  35. 35.42.78 × 1000 =
  36. 36.424.4 ÷ 100 =
  37. 37.420.4 ÷ 1000 =
  38. 38.69.6 ÷ 1000 =
  39. 39.205.9 × 1000 =
  40. 40.370.1 × 10 =

Answer key

  1. 350300
  2. 0.03363
  3. 4562
  4. 397.7
  5. 4.405
  6. 1422
  7. 4.759
  8. 18110
  9. 0.00222
  10. 178100
  11. 9.37
  12. 37510
  13. 0.02453
  14. 2680
  15. 0.04192
  16. 16380
  17. 75.1
  18. 298300
  19. 163.3
  20. 15220
  21. 349.4
  22. 483.5
  23. 1078
  24. 1.373
  25. 1.66
  26. 52
  27. 0.4448
  28. 462
  29. 3178
  30. 16090
  31. 508
  32. 221
  33. 33910
  34. 147600
  35. 42780
  36. 4.244
  37. 0.4204
  38. 0.0696
  39. 205900
  40. 3701

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