Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 269 · 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. 1.0.57 × 0.7 — where does the decimal point go? (a) 0.00399 (b) 3.99 (c) 0.0399 (d) 0.399
2. 2.0.86 × 34 — where does the decimal point go? (a) 0.2924 (b) 29.24 (c) 2.924 (d) 292.4
3. 3.2.6 × 0.4 — where does the decimal point go? (a) 0.104 (b) 10.4 (c) 0.0104 (d) 1.04
4. 4.8.9 × 3 — where does the decimal point go? (a) 2.67 (b) 26.7 (c) 267 (d) 0.267
5. 5.9.1 × 7 — where does the decimal point go? (a) 0.637 (b) 6.37 (c) 63.7 (d) 637
6. 6.2.6 × 0.7 — where does the decimal point go? (a) 0.182 (b) 1.82 (c) 0.0182 (d) 18.2
7. 7.3.4 × 0.4 — where does the decimal point go? (a) 13.6 (b) 1.36 (c) 0.0136 (d) 0.136
8. 8.4.5 × 37 — where does the decimal point go? (a) 1665 (b) 16.65 (c) 1.665 (d) 166.5
9. 9.1.2 × 0.3 — where does the decimal point go? (a) 0.036 (b) 3.6 (c) 0.36 (d) 0.0036
10. 10.0.56 × 3.9 — where does the decimal point go? (a) 0.02184 (b) 2.184 (c) 0.2184 (d) 21.84
11. 11.5.3 × 0.8 — where does the decimal point go? (a) 4.24 (b) 0.0424 (c) 0.424 (d) 42.4
12. 12.0.79 × 9 — where does the decimal point go? (a) 71.1 (b) 0.0711 (c) 0.711 (d) 7.11
13. 13.5.1 × 0.4 — where does the decimal point go? (a) 20.4 (b) 0.204 (c) 2.04 (d) 0.0204
14. 14.9.6 × 2 — where does the decimal point go? (a) 0.192 (b) 1.92 (c) 192 (d) 19.2
15. 15.2.3 × 34 — where does the decimal point go? (a) 0.782 (b) 78.2 (c) 7.82 (d) 782
16. 16.9.4 × 0.8 — where does the decimal point go? (a) 7.52 (b) 0.0752 (c) 0.752 (d) 75.2
17. 17.1.6 × 2.1 — where does the decimal point go? (a) 0.336 (b) 3.36 (c) 33.6 (d) 0.0336
18. 18.0.54 × 34 — where does the decimal point go? (a) 183.6 (b) 0.1836 (c) 1.836 (d) 18.36
19. 19.1.2 × 28 — where does the decimal point go? (a) 336 (b) 33.6 (c) 3.36 (d) 0.336
20. 20.1.2 × 0.7 — where does the decimal point go? (a) 0.84 (b) 0.084 (c) 8.4 (d) 0.0084
21. 21.9.9 × 39 — where does the decimal point go? (a) 3.861 (b) 386.1 (c) 3861 (d) 38.61
22. 22.0.28 × 4 — where does the decimal point go? (a) 1.12 (b) 0.112 (c) 0.0112 (d) 11.2
23. 23.0.64 × 29 — where does the decimal point go? (a) 1.856 (b) 0.1856 (c) 185.6 (d) 18.56
24. 24.8.8 × 0.3 — where does the decimal point go? (a) 0.264 (b) 0.0264 (c) 26.4 (d) 2.64
25. 25.8.3 × 0.4 — where does the decimal point go? (a) 0.332 (b) 33.2 (c) 0.0332 (d) 3.32
26. 26.0.97 × 7 — where does the decimal point go? (a) 6.79 (b) 67.9 (c) 0.679 (d) 0.0679
27. 27.4.4 × 3.8 — where does the decimal point go? (a) 16.72 (b) 1.672 (c) 0.1672 (d) 167.2
28. 28.7.8 × 0.7 — where does the decimal point go? (a) 0.546 (b) 54.6 (c) 5.46 (d) 0.0546
29. 29.1.6 × 0.9 — where does the decimal point go? (a) 0.144 (b) 14.4 (c) 0.0144 (d) 1.44
30. 30.6.6 × 7 — where does the decimal point go? (a) 0.462 (b) 46.2 (c) 462 (d) 4.62
31. 31.0.84 × 32 — where does the decimal point go? (a) 26.88 (b) 2.688 (c) 268.8 (d) 0.2688
32. 32.0.47 × 0.2 — where does the decimal point go? (a) 0.094 (b) 0.00094 (c) 0.0094 (d) 0.94
33. 33.3.6 × 8 — where does the decimal point go? (a) 0.288 (b) 288 (c) 28.8 (d) 2.88
34. 34.4.1 × 3 — where does the decimal point go? (a) 123 (b) 0.123 (c) 1.23 (d) 12.3
35. 35.8.4 × 2 — where does the decimal point go? (a) 1.68 (b) 16.8 (c) 168 (d) 0.168
36. 36.0.67 × 7 — where does the decimal point go? (a) 4.69 (b) 46.9 (c) 0.469 (d) 0.0469
37. 37.0.49 × 4.9 — where does the decimal point go? (a) 2.401 (b) 0.2401 (c) 0.02401 (d) 24.01
38. 38.6.8 × 7 — where does the decimal point go? (a) 0.476 (b) 47.6 (c) 4.76 (d) 476
39. 39.5.1 × 38 — where does the decimal point go? (a) 1.938 (b) 1938 (c) 19.38 (d) 193.8
40. 40.0.59 × 34 — where does the decimal point go? (a) 2.006 (b) 0.2006 (c) 200.6 (d) 20.06

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