Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 600 · 40 questions

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.

1. 1.2.7 × 9 — where does the decimal point go? (a) 0.243 (b) 243 (c) 2.43 (d) 24.3
2. 2.6.8 × 12 — where does the decimal point go? (a) 816 (b) 8.16 (c) 81.6 (d) 0.816
3. 3.0.82 × 0.3 — where does the decimal point go? (a) 0.0246 (b) 0.246 (c) 0.00246 (d) 2.46
4. 4.7.3 × 8 — where does the decimal point go? (a) 58.4 (b) 0.584 (c) 5.84 (d) 584
5. 5.3.7 × 0.3 — where does the decimal point go? (a) 0.0111 (b) 0.111 (c) 1.11 (d) 11.1
6. 6.5.8 × 0.8 — where does the decimal point go? (a) 4.64 (b) 46.4 (c) 0.464 (d) 0.0464
7. 7.0.78 × 8 — where does the decimal point go? (a) 6.24 (b) 0.0624 (c) 62.4 (d) 0.624
8. 8.0.83 × 1.6 — where does the decimal point go? (a) 0.01328 (b) 1.328 (c) 13.28 (d) 0.1328
9. 9.6.6 × 0.4 — where does the decimal point go? (a) 26.4 (b) 0.0264 (c) 2.64 (d) 0.264
10. 10.2.7 × 1.4 — where does the decimal point go? (a) 37.8 (b) 0.378 (c) 3.78 (d) 0.0378
11. 11.9.9 × 3.9 — where does the decimal point go? (a) 0.3861 (b) 3.861 (c) 386.1 (d) 38.61
12. 12.4.7 × 2 — where does the decimal point go? (a) 0.094 (b) 94 (c) 9.4 (d) 0.94
13. 13.0.76 × 6 — where does the decimal point go? (a) 0.456 (b) 0.0456 (c) 4.56 (d) 45.6
14. 14.9.4 × 0.9 — where does the decimal point go? (a) 0.0846 (b) 84.6 (c) 0.846 (d) 8.46
15. 15.0.36 × 9 — where does the decimal point go? (a) 3.24 (b) 0.324 (c) 0.0324 (d) 32.4
16. 16.4.9 × 9 — where does the decimal point go? (a) 44.1 (b) 0.441 (c) 4.41 (d) 441
17. 17.7.7 × 2.8 — where does the decimal point go? (a) 2.156 (b) 215.6 (c) 21.56 (d) 0.2156
18. 18.4.7 × 2.5 — where does the decimal point go? (a) 1.175 (b) 117.5 (c) 0.1175 (d) 11.75
19. 19.0.33 × 0.8 — where does the decimal point go? (a) 0.0264 (b) 0.00264 (c) 2.64 (d) 0.264
20. 20.7.1 × 0.5 — where does the decimal point go? (a) 0.0355 (b) 35.5 (c) 0.355 (d) 3.55
21. 21.0.96 × 32 — where does the decimal point go? (a) 3.072 (b) 0.3072 (c) 30.72 (d) 307.2
22. 22.2.9 × 4 — where does the decimal point go? (a) 0.116 (b) 1.16 (c) 11.6 (d) 116
23. 23.7.3 × 38 — where does the decimal point go? (a) 2.774 (b) 277.4 (c) 27.74 (d) 2774
24. 24.1.9 × 4 — where does the decimal point go? (a) 0.76 (b) 76 (c) 0.076 (d) 7.6
25. 25.0.53 × 4.5 — where does the decimal point go? (a) 2.385 (b) 0.2385 (c) 23.85 (d) 0.02385
26. 26.1.2 × 0.9 — where does the decimal point go? (a) 10.8 (b) 1.08 (c) 0.0108 (d) 0.108
27. 27.7.5 × 3 — where does the decimal point go? (a) 2.25 (b) 22.5 (c) 0.225 (d) 225
28. 28.0.19 × 32 — where does the decimal point go? (a) 60.8 (b) 6.08 (c) 0.0608 (d) 0.608
29. 29.7.2 × 0.8 — where does the decimal point go? (a) 5.76 (b) 0.0576 (c) 57.6 (d) 0.576
30. 30.0.14 × 31 — where does the decimal point go? (a) 43.4 (b) 0.434 (c) 4.34 (d) 0.0434
31. 31.1.4 × 42 — where does the decimal point go? (a) 58.8 (b) 0.588 (c) 5.88 (d) 588
32. 32.7.8 × 2.2 — where does the decimal point go? (a) 1.716 (b) 17.16 (c) 171.6 (d) 0.1716
33. 33.1.6 × 14 — where does the decimal point go? (a) 22.4 (b) 2.24 (c) 224 (d) 0.224
34. 34.4.6 × 3.9 — where does the decimal point go? (a) 17.94 (b) 1.794 (c) 179.4 (d) 0.1794
35. 35.0.87 × 0.2 — where does the decimal point go? (a) 0.174 (b) 0.0174 (c) 0.00174 (d) 1.74
36. 36.4.8 × 0.8 — where does the decimal point go? (a) 0.0384 (b) 0.384 (c) 3.84 (d) 38.4
37. 37.3.6 × 7 — where does the decimal point go? (a) 2.52 (b) 252 (c) 0.252 (d) 25.2
38. 38.0.21 × 0.2 — where does the decimal point go? (a) 0.00042 (b) 0.42 (c) 0.0042 (d) 0.042
39. 39.6.1 × 1.2 — where does the decimal point go? (a) 0.732 (b) 7.32 (c) 73.2 (d) 0.0732
40. 40.0.36 × 0.3 — where does the decimal point go? (a) 1.08 (b) 0.108 (c) 0.00108 (d) 0.0108

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