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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 87 · 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. 1.1.97 ÷ 10 =
  2. 2.41.91 × 10 =
  3. 3.225.3 × 10 =
  4. 4.13.21 × 10 =
  5. 5.42.76 × 100 =
  6. 6.21.13 × 100 =
  7. 7.25.22 × 100 =
  8. 8.7.34 ÷ 1000 =
  9. 9.247.1 ÷ 10 =
  10. 10.348.4 × 10 =
  11. 11.42.14 × 1000 =
  12. 12.185.8 ÷ 10 =
  13. 13.11.28 ÷ 10 =
  14. 14.257.6 ÷ 1000 =
  15. 15.249.7 × 100 =
  16. 16.36.91 × 10 =
  17. 17.427.5 ÷ 10 =
  18. 18.10.06 × 1000 =
  19. 19.236.5 ÷ 10 =
  20. 20.132.7 ÷ 10 =
  21. 21.24.27 × 100 =
  22. 22.448.8 × 100 =
  23. 23.116.1 × 100 =
  24. 24.130.1 ÷ 1000 =
  25. 25.84.1 × 10 =
  26. 26.237.4 × 1000 =
  27. 27.29.41 ÷ 10 =
  28. 28.325.4 × 100 =
  29. 29.372.2 ÷ 1000 =
  30. 30.45.23 ÷ 10 =
  31. 31.31.75 ÷ 10 =
  32. 32.314.5 ÷ 10 =
  33. 33.22.51 ÷ 10 =
  34. 34.72.7 × 100 =
  35. 35.48.71 × 10 =
  36. 36.3.51 × 10 =
  37. 37.374.1 × 1000 =
  38. 38.16.5 × 1000 =
  39. 39.192.3 × 1000 =
  40. 40.6.1 ÷ 100 =

Answer key

  1. 0.197
  2. 419.1
  3. 2253
  4. 132.1
  5. 4276
  6. 2113
  7. 2522
  8. 0.00734
  9. 24.71
  10. 3484
  11. 42140
  12. 18.58
  13. 1.128
  14. 0.2576
  15. 24970
  16. 369.1
  17. 42.75
  18. 10060
  19. 23.65
  20. 13.27
  21. 2427
  22. 44880
  23. 11610
  24. 0.1301
  25. 841
  26. 237400
  27. 2.941
  28. 32540
  29. 0.3722
  30. 4.523
  31. 3.175
  32. 31.45
  33. 2.251
  34. 7270
  35. 487.1
  36. 35.1
  37. 374100
  38. 16500
  39. 192300
  40. 0.061

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