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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 60 · 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. 1.27.7 ÷ 10 =
  2. 2.16.88 ÷ 10 =
  3. 3.365.3 × 1000 =
  4. 4.402.5 ÷ 10 =
  5. 5.48.1 ÷ 10 =
  6. 6.97.4 × 10 =
  7. 7.16.36 × 1000 =
  8. 8.47.99 × 1000 =
  9. 9.183.1 ÷ 100 =
  10. 10.5.8 × 100 =
  11. 11.170.7 ÷ 1000 =
  12. 12.41.2 × 10 =
  13. 13.36.24 × 100 =
  14. 14.310.1 ÷ 10 =
  15. 15.49.13 × 10 =
  16. 16.12.94 × 10 =
  17. 17.38.81 ÷ 1000 =
  18. 18.7.28 × 1000 =
  19. 19.219.9 × 1000 =
  20. 20.18.99 ÷ 10 =
  21. 21.334.1 × 10 =
  22. 22.41.06 × 100 =
  23. 23.231.8 × 100 =
  24. 24.22.64 ÷ 100 =
  25. 25.14.98 × 100 =
  26. 26.456.9 ÷ 10 =
  27. 27.472.3 × 10 =
  28. 28.53.1 ÷ 100 =
  29. 29.0.45 × 10 =
  30. 30.489.2 × 1000 =
  31. 31.42.6 ÷ 100 =
  32. 32.8.28 × 100 =
  33. 33.460.2 × 10 =
  34. 34.30.27 × 100 =
  35. 35.485.8 × 10 =
  36. 36.29.01 ÷ 1000 =
  37. 37.47.18 × 10 =
  38. 38.112.7 × 10 =
  39. 39.31.39 ÷ 1000 =
  40. 40.45.56 ÷ 1000 =

Answer key

  1. 2.77
  2. 1.688
  3. 365300
  4. 40.25
  5. 4.81
  6. 974
  7. 16360
  8. 47990
  9. 1.831
  10. 580
  11. 0.1707
  12. 412
  13. 3624
  14. 31.01
  15. 491.3
  16. 129.4
  17. 0.03881
  18. 7280
  19. 219900
  20. 1.899
  21. 3341
  22. 4106
  23. 23180
  24. 0.2264
  25. 1498
  26. 45.69
  27. 4723
  28. 0.531
  29. 4.5
  30. 489200
  31. 0.426
  32. 828
  33. 4602
  34. 3027
  35. 4858
  36. 0.02901
  37. 471.8
  38. 1127
  39. 0.03139
  40. 0.04556

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