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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 375 · 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. 1.0.78 × 0.2 — where does the decimal point go? (a) 0.0156 (b) 0.156 (c) 1.56 (d) 0.00156
  2. 2.7.1 × 3 — where does the decimal point go? (a) 213 (b) 2.13 (c) 21.3 (d) 0.213
  3. 3.1.9 × 0.3 — where does the decimal point go? (a) 5.7 (b) 0.057 (c) 0.0057 (d) 0.57
  4. 4.5.7 × 31 — where does the decimal point go? (a) 176.7 (b) 1767 (c) 17.67 (d) 1.767
  5. 5.1.4 × 48 — where does the decimal point go? (a) 6.72 (b) 67.2 (c) 672 (d) 0.672
  6. 6.1.8 × 3 — where does the decimal point go? (a) 0.054 (b) 0.54 (c) 5.4 (d) 54
  7. 7.0.19 × 4.3 — where does the decimal point go? (a) 0.817 (b) 0.00817 (c) 0.0817 (d) 8.17
  8. 8.0.83 × 3.2 — where does the decimal point go? (a) 26.56 (b) 0.02656 (c) 0.2656 (d) 2.656
  9. 9.4.4 × 9 — where does the decimal point go? (a) 396 (b) 0.396 (c) 39.6 (d) 3.96
  10. 10.0.26 × 2.1 — where does the decimal point go? (a) 0.00546 (b) 0.546 (c) 5.46 (d) 0.0546
  11. 11.9.5 × 5 — where does the decimal point go? (a) 47.5 (b) 0.475 (c) 475 (d) 4.75
  12. 12.4.6 × 3 — where does the decimal point go? (a) 1.38 (b) 138 (c) 13.8 (d) 0.138
  13. 13.9.9 × 26 — where does the decimal point go? (a) 25.74 (b) 257.4 (c) 2574 (d) 2.574
  14. 14.6.2 × 0.3 — where does the decimal point go? (a) 0.186 (b) 0.0186 (c) 18.6 (d) 1.86
  15. 15.5.9 × 4 — where does the decimal point go? (a) 23.6 (b) 236 (c) 2.36 (d) 0.236
  16. 16.6.8 × 39 — where does the decimal point go? (a) 26.52 (b) 2652 (c) 2.652 (d) 265.2
  17. 17.7.6 × 0.6 — where does the decimal point go? (a) 45.6 (b) 0.0456 (c) 0.456 (d) 4.56
  18. 18.4.7 × 0.9 — where does the decimal point go? (a) 0.423 (b) 4.23 (c) 0.0423 (d) 42.3
  19. 19.7.9 × 0.4 — where does the decimal point go? (a) 3.16 (b) 0.0316 (c) 0.316 (d) 31.6
  20. 20.0.44 × 16 — where does the decimal point go? (a) 0.704 (b) 0.0704 (c) 7.04 (d) 70.4
  21. 21.0.33 × 1.5 — where does the decimal point go? (a) 0.00495 (b) 4.95 (c) 0.495 (d) 0.0495
  22. 22.8.9 × 21 — where does the decimal point go? (a) 1.869 (b) 18.69 (c) 1869 (d) 186.9
  23. 23.4.4 × 28 — where does the decimal point go? (a) 12.32 (b) 123.2 (c) 1.232 (d) 1232
  24. 24.0.28 × 2.1 — where does the decimal point go? (a) 0.00588 (b) 0.588 (c) 0.0588 (d) 5.88
  25. 25.9.1 × 48 — where does the decimal point go? (a) 4368 (b) 436.8 (c) 4.368 (d) 43.68
  26. 26.0.78 × 4.3 — where does the decimal point go? (a) 0.3354 (b) 33.54 (c) 0.03354 (d) 3.354
  27. 27.7.8 × 2 — where does the decimal point go? (a) 156 (b) 0.156 (c) 1.56 (d) 15.6
  28. 28.0.22 × 19 — where does the decimal point go? (a) 0.418 (b) 0.0418 (c) 4.18 (d) 41.8
  29. 29.2.8 × 2 — where does the decimal point go? (a) 0.056 (b) 56 (c) 0.56 (d) 5.6
  30. 30.0.34 × 3 — where does the decimal point go? (a) 0.0102 (b) 0.102 (c) 10.2 (d) 1.02
  31. 31.0.18 × 47 — where does the decimal point go? (a) 0.0846 (b) 0.846 (c) 84.6 (d) 8.46
  32. 32.8.9 × 0.3 — where does the decimal point go? (a) 2.67 (b) 0.0267 (c) 26.7 (d) 0.267
  33. 33.0.58 × 18 — where does the decimal point go? (a) 1.044 (b) 0.1044 (c) 104.4 (d) 10.44
  34. 34.3.5 × 7 — where does the decimal point go? (a) 245 (b) 0.245 (c) 24.5 (d) 2.45
  35. 35.0.41 × 2.9 — where does the decimal point go? (a) 0.01189 (b) 11.89 (c) 1.189 (d) 0.1189
  36. 36.5.6 × 14 — where does the decimal point go? (a) 78.4 (b) 784 (c) 0.784 (d) 7.84
  37. 37.0.47 × 4.6 — where does the decimal point go? (a) 0.02162 (b) 21.62 (c) 2.162 (d) 0.2162
  38. 38.0.16 × 2.4 — where does the decimal point go? (a) 0.0384 (b) 0.00384 (c) 0.384 (d) 3.84
  39. 39.0.98 × 3 — where does the decimal point go? (a) 0.0294 (b) 2.94 (c) 29.4 (d) 0.294
  40. 40.9.1 × 7 — where does the decimal point go? (a) 6.37 (b) 63.7 (c) 0.637 (d) 637

Answer key

  1. 0.156
  2. 21.3
  3. 0.57
  4. 176.7
  5. 67.2
  6. 5.4
  7. 0.817
  8. 2.656
  9. 39.6
  10. 0.546
  11. 47.5
  12. 13.8
  13. 257.4
  14. 1.86
  15. 23.6
  16. 265.2
  17. 4.56
  18. 4.23
  19. 3.16
  20. 7.04
  21. 0.495
  22. 186.9
  23. 123.2
  24. 0.588
  25. 436.8
  26. 3.354
  27. 15.6
  28. 4.18
  29. 5.6
  30. 1.02
  31. 8.46
  32. 2.67
  33. 10.44
  34. 24.5
  35. 1.189
  36. 78.4
  37. 2.162
  38. 0.384
  39. 2.94
  40. 63.7

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