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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 342 · 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. 1.161.6 × 10 =
  2. 2.54.8 × 100 =
  3. 3.105.2 ÷ 100 =
  4. 4.371.1 × 1000 =
  5. 5.10.31 × 10 =
  6. 6.5.52 × 10 =
  7. 7.71.8 ÷ 100 =
  8. 8.3.29 ÷ 1000 =
  9. 9.425.5 ÷ 10 =
  10. 10.1.31 × 100 =
  11. 11.32.8 × 100 =
  12. 12.13.3 ÷ 10 =
  13. 13.146.9 × 1000 =
  14. 14.4.23 ÷ 10 =
  15. 15.12.58 ÷ 1000 =
  16. 16.40.37 ÷ 100 =
  17. 17.110.6 ÷ 1000 =
  18. 18.261.3 ÷ 10 =
  19. 19.139.8 ÷ 1000 =
  20. 20.414.9 ÷ 10 =
  21. 21.126.5 ÷ 1000 =
  22. 22.25.7 ÷ 10 =
  23. 23.177.7 ÷ 1000 =
  24. 24.52.3 ÷ 100 =
  25. 25.38.32 × 10 =
  26. 26.279.7 ÷ 10 =
  27. 27.31.92 ÷ 1000 =
  28. 28.385.5 × 100 =
  29. 29.13.47 × 100 =
  30. 30.208.1 × 100 =
  31. 31.171.6 ÷ 100 =
  32. 32.23.09 ÷ 10 =
  33. 33.21.04 × 1000 =
  34. 34.307.5 ÷ 10 =
  35. 35.30.34 × 10 =
  36. 36.20.1 × 100 =
  37. 37.14.43 × 1000 =
  38. 38.32.27 × 1000 =
  39. 39.233.9 × 100 =
  40. 40.243.8 ÷ 10 =

Answer key

  1. 1616
  2. 5480
  3. 1.052
  4. 371100
  5. 103.1
  6. 55.2
  7. 0.718
  8. 0.00329
  9. 42.55
  10. 131
  11. 3280
  12. 1.33
  13. 146900
  14. 0.423
  15. 0.01258
  16. 0.4037
  17. 0.1106
  18. 26.13
  19. 0.1398
  20. 41.49
  21. 0.1265
  22. 2.57
  23. 0.1777
  24. 0.523
  25. 383.2
  26. 27.97
  27. 0.03192
  28. 38550
  29. 1347
  30. 20810
  31. 1.716
  32. 2.309
  33. 21040
  34. 30.75
  35. 303.4
  36. 2010
  37. 14430
  38. 32270
  39. 23390
  40. 24.38

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