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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 49 · 40 questions
TalentJR

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

NameDateTime takenScore ___ / 40
  1. 1.0.14 × 0.6 — where does the decimal point go? (a) 0.00084 (b) 0.0084 (c) 0.84 (d) 0.084
  2. 2.7.5 × 0.7 — where does the decimal point go? (a) 0.0525 (b) 0.525 (c) 52.5 (d) 5.25
  3. 3.2.9 × 2 — where does the decimal point go? (a) 5.8 (b) 0.58 (c) 58 (d) 0.058
  4. 4.7.4 × 8 — where does the decimal point go? (a) 59.2 (b) 0.592 (c) 5.92 (d) 592
  5. 5.4.4 × 4 — where does the decimal point go? (a) 1.76 (b) 17.6 (c) 0.176 (d) 176
  6. 6.4.3 × 3.5 — where does the decimal point go? (a) 1.505 (b) 0.1505 (c) 150.5 (d) 15.05
  7. 7.2.6 × 38 — where does the decimal point go? (a) 988 (b) 9.88 (c) 0.988 (d) 98.8
  8. 8.8.6 × 0.3 — where does the decimal point go? (a) 2.58 (b) 0.258 (c) 25.8 (d) 0.0258
  9. 9.2.6 × 1.2 — where does the decimal point go? (a) 3.12 (b) 0.312 (c) 0.0312 (d) 31.2
  10. 10.1.4 × 4 — where does the decimal point go? (a) 0.056 (b) 56 (c) 5.6 (d) 0.56
  11. 11.8.7 × 1.5 — where does the decimal point go? (a) 130.5 (b) 0.1305 (c) 13.05 (d) 1.305
  12. 12.2.4 × 8 — where does the decimal point go? (a) 0.192 (b) 19.2 (c) 192 (d) 1.92
  13. 13.1.6 × 47 — where does the decimal point go? (a) 75.2 (b) 0.752 (c) 752 (d) 7.52
  14. 14.2.1 × 37 — where does the decimal point go? (a) 7.77 (b) 77.7 (c) 777 (d) 0.777
  15. 15.0.53 × 1.3 — where does the decimal point go? (a) 0.00689 (b) 6.89 (c) 0.0689 (d) 0.689
  16. 16.0.87 × 0.3 — where does the decimal point go? (a) 0.00261 (b) 0.0261 (c) 2.61 (d) 0.261
  17. 17.0.55 × 4.1 — where does the decimal point go? (a) 0.2255 (b) 0.02255 (c) 2.255 (d) 22.55
  18. 18.5.8 × 4.3 — where does the decimal point go? (a) 24.94 (b) 2.494 (c) 249.4 (d) 0.2494
  19. 19.7.7 × 3.9 — where does the decimal point go? (a) 30.03 (b) 3.003 (c) 0.3003 (d) 300.3
  20. 20.4.9 × 4 — where does the decimal point go? (a) 1.96 (b) 19.6 (c) 196 (d) 0.196
  21. 21.7.7 × 29 — where does the decimal point go? (a) 22.33 (b) 2233 (c) 2.233 (d) 223.3
  22. 22.0.76 × 9 — where does the decimal point go? (a) 6.84 (b) 68.4 (c) 0.0684 (d) 0.684
  23. 23.0.25 × 0.7 — where does the decimal point go? (a) 0.175 (b) 1.75 (c) 0.0175 (d) 0.00175
  24. 24.2.5 × 7 — where does the decimal point go? (a) 0.175 (b) 17.5 (c) 1.75 (d) 175
  25. 25.0.73 × 48 — where does the decimal point go? (a) 3.504 (b) 35.04 (c) 0.3504 (d) 350.4
  26. 26.0.76 × 44 — where does the decimal point go? (a) 3.344 (b) 0.3344 (c) 334.4 (d) 33.44
  27. 27.5.9 × 8 — where does the decimal point go? (a) 47.2 (b) 0.472 (c) 472 (d) 4.72
  28. 28.2.7 × 11 — where does the decimal point go? (a) 2.97 (b) 0.297 (c) 29.7 (d) 297
  29. 29.0.59 × 11 — where does the decimal point go? (a) 64.9 (b) 6.49 (c) 0.0649 (d) 0.649
  30. 30.0.53 × 31 — where does the decimal point go? (a) 0.1643 (b) 16.43 (c) 1.643 (d) 164.3
  31. 31.0.47 × 1.9 — where does the decimal point go? (a) 0.893 (b) 0.0893 (c) 0.00893 (d) 8.93
  32. 32.0.71 × 1.8 — where does the decimal point go? (a) 0.01278 (b) 0.1278 (c) 12.78 (d) 1.278
  33. 33.1.3 × 4 — where does the decimal point go? (a) 5.2 (b) 52 (c) 0.52 (d) 0.052
  34. 34.6.7 × 3 — where does the decimal point go? (a) 2.01 (b) 0.201 (c) 201 (d) 20.1
  35. 35.2.8 × 6 — where does the decimal point go? (a) 0.168 (b) 168 (c) 1.68 (d) 16.8
  36. 36.8.4 × 0.4 — where does the decimal point go? (a) 33.6 (b) 0.336 (c) 0.0336 (d) 3.36
  37. 37.0.69 × 7 — where does the decimal point go? (a) 48.3 (b) 0.0483 (c) 4.83 (d) 0.483
  38. 38.8.4 × 0.7 — where does the decimal point go? (a) 0.0588 (b) 0.588 (c) 58.8 (d) 5.88
  39. 39.4.1 × 3 — where does the decimal point go? (a) 12.3 (b) 0.123 (c) 1.23 (d) 123
  40. 40.2.4 × 2.1 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 0.0504 (d) 0.504

Answer key

  1. 0.084
  2. 5.25
  3. 5.8
  4. 59.2
  5. 17.6
  6. 15.05
  7. 98.8
  8. 2.58
  9. 3.12
  10. 5.6
  11. 13.05
  12. 19.2
  13. 75.2
  14. 77.7
  15. 0.689
  16. 0.261
  17. 2.255
  18. 24.94
  19. 30.03
  20. 19.6
  21. 223.3
  22. 6.84
  23. 0.175
  24. 17.5
  25. 35.04
  26. 33.44
  27. 47.2
  28. 29.7
  29. 6.49
  30. 16.43
  31. 0.893
  32. 1.278
  33. 5.2
  34. 20.1
  35. 16.8
  36. 3.36
  37. 4.83
  38. 5.88
  39. 12.3
  40. 5.04

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