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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 972 · 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. 1.17.29 × 10 =
  2. 2.35.67 ÷ 10 =
  3. 3.30.21 × 1000 =
  4. 4.449.5 × 100 =
  5. 5.32.02 × 1000 =
  6. 6.4.2 × 100 =
  7. 7.21.41 × 100 =
  8. 8.489.6 ÷ 1000 =
  9. 9.132.4 ÷ 1000 =
  10. 10.24.1 ÷ 1000 =
  11. 11.26.77 ÷ 10 =
  12. 12.26.56 ÷ 1000 =
  13. 13.84.4 × 1000 =
  14. 14.11.93 ÷ 100 =
  15. 15.45.31 ÷ 10 =
  16. 16.16.59 × 1000 =
  17. 17.41.1 × 1000 =
  18. 18.455.2 × 10 =
  19. 19.1.18 ÷ 100 =
  20. 20.11.29 × 1000 =
  21. 21.1.15 ÷ 10 =
  22. 22.18.71 ÷ 10 =
  23. 23.43.76 ÷ 1000 =
  24. 24.31.42 ÷ 10 =
  25. 25.420.8 × 10 =
  26. 26.27.81 × 1000 =
  27. 27.300.2 × 10 =
  28. 28.414.5 × 10 =
  29. 29.134.4 ÷ 1000 =
  30. 30.52.1 ÷ 10 =
  31. 31.15.48 × 100 =
  32. 32.169.6 × 1000 =
  33. 33.313.7 × 1000 =
  34. 34.16.75 ÷ 1000 =
  35. 35.43.9 × 1000 =
  36. 36.86.1 × 1000 =
  37. 37.157.3 × 10 =
  38. 38.48.33 ÷ 100 =
  39. 39.40.8 × 10 =
  40. 40.147.2 × 100 =

Answer key

  1. 172.9
  2. 3.567
  3. 30210
  4. 44950
  5. 32020
  6. 420
  7. 2141
  8. 0.4896
  9. 0.1324
  10. 0.0241
  11. 2.677
  12. 0.02656
  13. 84400
  14. 0.1193
  15. 4.531
  16. 16590
  17. 41100
  18. 4552
  19. 0.0118
  20. 11290
  21. 0.115
  22. 1.871
  23. 0.04376
  24. 3.142
  25. 4208
  26. 27810
  27. 3002
  28. 4145
  29. 0.1344
  30. 5.21
  31. 1548
  32. 169600
  33. 313700
  34. 0.01675
  35. 43900
  36. 86100
  37. 1573
  38. 0.4833
  39. 408
  40. 14720

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