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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 53 · 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. 1.2.4 × 4 — where does the decimal point go? (a) 96 (b) 0.096 (c) 9.6 (d) 0.96
  2. 2.2.2 × 39 — where does the decimal point go? (a) 0.858 (b) 858 (c) 85.8 (d) 8.58
  3. 3.0.58 × 4.7 — where does the decimal point go? (a) 27.26 (b) 0.02726 (c) 0.2726 (d) 2.726
  4. 4.0.23 × 23 — where does the decimal point go? (a) 5.29 (b) 0.529 (c) 52.9 (d) 0.0529
  5. 5.2.8 × 7 — where does the decimal point go? (a) 196 (b) 0.196 (c) 1.96 (d) 19.6
  6. 6.0.93 × 1.9 — where does the decimal point go? (a) 17.67 (b) 0.01767 (c) 0.1767 (d) 1.767
  7. 7.0.25 × 37 — where does the decimal point go? (a) 9.25 (b) 0.0925 (c) 92.5 (d) 0.925
  8. 8.0.62 × 0.3 — where does the decimal point go? (a) 0.186 (b) 0.00186 (c) 1.86 (d) 0.0186
  9. 9.8.1 × 0.5 — where does the decimal point go? (a) 4.05 (b) 0.0405 (c) 0.405 (d) 40.5
  10. 10.0.98 × 0.4 — where does the decimal point go? (a) 0.00392 (b) 0.0392 (c) 3.92 (d) 0.392
  11. 11.8.4 × 11 — where does the decimal point go? (a) 9.24 (b) 92.4 (c) 0.924 (d) 924
  12. 12.1.2 × 3 — where does the decimal point go? (a) 3.6 (b) 0.36 (c) 0.036 (d) 36
  13. 13.9.7 × 11 — where does the decimal point go? (a) 10.67 (b) 1067 (c) 1.067 (d) 106.7
  14. 14.0.96 × 1.7 — where does the decimal point go? (a) 16.32 (b) 0.1632 (c) 0.01632 (d) 1.632
  15. 15.0.56 × 0.9 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 0.0504 (d) 0.00504
  16. 16.0.16 × 0.7 — where does the decimal point go? (a) 0.0112 (b) 1.12 (c) 0.112 (d) 0.00112
  17. 17.0.65 × 2.3 — where does the decimal point go? (a) 0.01495 (b) 1.495 (c) 0.1495 (d) 14.95
  18. 18.7.2 × 2 — where does the decimal point go? (a) 0.144 (b) 144 (c) 14.4 (d) 1.44
  19. 19.0.95 × 3.9 — where does the decimal point go? (a) 3.705 (b) 0.03705 (c) 0.3705 (d) 37.05
  20. 20.3.3 × 0.8 — where does the decimal point go? (a) 26.4 (b) 0.264 (c) 2.64 (d) 0.0264
  21. 21.1.3 × 6 — where does the decimal point go? (a) 0.78 (b) 7.8 (c) 0.078 (d) 78
  22. 22.5.1 × 2.9 — where does the decimal point go? (a) 14.79 (b) 147.9 (c) 0.1479 (d) 1.479
  23. 23.9.5 × 7 — where does the decimal point go? (a) 66.5 (b) 0.665 (c) 665 (d) 6.65
  24. 24.0.61 × 19 — where does the decimal point go? (a) 0.1159 (b) 1.159 (c) 115.9 (d) 11.59
  25. 25.0.25 × 2.1 — where does the decimal point go? (a) 0.525 (b) 0.00525 (c) 0.0525 (d) 5.25
  26. 26.5.7 × 4 — where does the decimal point go? (a) 0.228 (b) 22.8 (c) 2.28 (d) 228
  27. 27.1.2 × 0.4 — where does the decimal point go? (a) 0.0048 (b) 0.048 (c) 4.8 (d) 0.48
  28. 28.0.12 × 4.2 — where does the decimal point go? (a) 0.504 (b) 0.00504 (c) 0.0504 (d) 5.04
  29. 29.6.3 × 3 — where does the decimal point go? (a) 1.89 (b) 18.9 (c) 0.189 (d) 189
  30. 30.6.7 × 1.7 — where does the decimal point go? (a) 113.9 (b) 11.39 (c) 0.1139 (d) 1.139
  31. 31.0.66 × 22 — where does the decimal point go? (a) 14.52 (b) 1.452 (c) 0.1452 (d) 145.2
  32. 32.0.98 × 2.3 — where does the decimal point go? (a) 0.2254 (b) 22.54 (c) 2.254 (d) 0.02254
  33. 33.2.6 × 1.2 — where does the decimal point go? (a) 0.0312 (b) 0.312 (c) 31.2 (d) 3.12
  34. 34.8.9 × 34 — where does the decimal point go? (a) 3.026 (b) 3026 (c) 30.26 (d) 302.6
  35. 35.0.89 × 0.9 — where does the decimal point go? (a) 8.01 (b) 0.00801 (c) 0.801 (d) 0.0801
  36. 36.7.9 × 1.6 — where does the decimal point go? (a) 1.264 (b) 126.4 (c) 0.1264 (d) 12.64
  37. 37.8.8 × 6 — where does the decimal point go? (a) 5.28 (b) 528 (c) 52.8 (d) 0.528
  38. 38.0.24 × 41 — where does the decimal point go? (a) 0.0984 (b) 9.84 (c) 0.984 (d) 98.4
  39. 39.0.34 × 3.1 — where does the decimal point go? (a) 0.01054 (b) 1.054 (c) 0.1054 (d) 10.54
  40. 40.0.18 × 0.6 — where does the decimal point go? (a) 0.108 (b) 1.08 (c) 0.00108 (d) 0.0108

Answer key

  1. 9.6
  2. 85.8
  3. 2.726
  4. 5.29
  5. 19.6
  6. 1.767
  7. 9.25
  8. 0.186
  9. 4.05
  10. 0.392
  11. 92.4
  12. 3.6
  13. 106.7
  14. 1.632
  15. 0.504
  16. 0.112
  17. 1.495
  18. 14.4
  19. 3.705
  20. 2.64
  21. 7.8
  22. 14.79
  23. 66.5
  24. 11.59
  25. 0.525
  26. 22.8
  27. 0.48
  28. 0.504
  29. 18.9
  30. 11.39
  31. 14.52
  32. 2.254
  33. 3.12
  34. 302.6
  35. 0.801
  36. 12.64
  37. 52.8
  38. 9.84
  39. 1.054
  40. 0.108

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