Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 42 · 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. 1.8.3 × 1.2 — where does the decimal point go? (a) 0.996 (b) 0.0996 (c) 99.6 (d) 9.96
2. 2.0.13 × 25 — where does the decimal point go? (a) 0.0325 (b) 3.25 (c) 32.5 (d) 0.325
3. 3.3.3 × 31 — where does the decimal point go? (a) 1023 (b) 102.3 (c) 10.23 (d) 1.023
4. 4.0.88 × 13 — where does the decimal point go? (a) 0.1144 (b) 114.4 (c) 11.44 (d) 1.144
5. 5.0.72 × 3 — where does the decimal point go? (a) 21.6 (b) 0.0216 (c) 0.216 (d) 2.16
6. 6.7.8 × 0.8 — where does the decimal point go? (a) 0.624 (b) 62.4 (c) 0.0624 (d) 6.24
7. 7.0.85 × 9 — where does the decimal point go? (a) 76.5 (b) 0.765 (c) 7.65 (d) 0.0765
8. 8.4.9 × 2.7 — where does the decimal point go? (a) 13.23 (b) 0.1323 (c) 132.3 (d) 1.323
9. 9.7.2 × 9 — where does the decimal point go? (a) 0.648 (b) 64.8 (c) 648 (d) 6.48
10. 10.0.13 × 0.8 — where does the decimal point go? (a) 0.00104 (b) 0.0104 (c) 1.04 (d) 0.104
11. 11.6.7 × 46 — where does the decimal point go? (a) 308.2 (b) 3082 (c) 3.082 (d) 30.82
12. 12.7.7 × 0.8 — where does the decimal point go? (a) 6.16 (b) 0.616 (c) 61.6 (d) 0.0616
13. 13.3.2 × 17 — where does the decimal point go? (a) 54.4 (b) 5.44 (c) 0.544 (d) 544
14. 14.8.7 × 3.6 — where does the decimal point go? (a) 31.32 (b) 313.2 (c) 0.3132 (d) 3.132
15. 15.1.9 × 0.3 — where does the decimal point go? (a) 5.7 (b) 0.057 (c) 0.57 (d) 0.0057
16. 16.1.7 × 2.9 — where does the decimal point go? (a) 0.0493 (b) 0.493 (c) 49.3 (d) 4.93
17. 17.0.69 × 3.4 — where does the decimal point go? (a) 0.2346 (b) 2.346 (c) 23.46 (d) 0.02346
18. 18.3.9 × 17 — where does the decimal point go? (a) 66.3 (b) 6.63 (c) 663 (d) 0.663
19. 19.9.2 × 0.9 — where does the decimal point go? (a) 8.28 (b) 0.0828 (c) 82.8 (d) 0.828
20. 20.1.7 × 0.8 — where does the decimal point go? (a) 1.36 (b) 0.136 (c) 0.0136 (d) 13.6
21. 21.0.44 × 4.1 — where does the decimal point go? (a) 0.01804 (b) 0.1804 (c) 18.04 (d) 1.804
22. 22.7.2 × 3.3 — where does the decimal point go? (a) 0.2376 (b) 237.6 (c) 2.376 (d) 23.76
23. 23.0.63 × 0.4 — where does the decimal point go? (a) 0.252 (b) 2.52 (c) 0.0252 (d) 0.00252
24. 24.6.4 × 0.6 — where does the decimal point go? (a) 38.4 (b) 3.84 (c) 0.0384 (d) 0.384
25. 25.8.8 × 0.7 — where does the decimal point go? (a) 61.6 (b) 0.616 (c) 6.16 (d) 0.0616
26. 26.0.38 × 37 — where does the decimal point go? (a) 14.06 (b) 1.406 (c) 0.1406 (d) 140.6
27. 27.0.38 × 28 — where does the decimal point go? (a) 1.064 (b) 0.1064 (c) 106.4 (d) 10.64
28. 28.0.72 × 8 — where does the decimal point go? (a) 5.76 (b) 57.6 (c) 0.576 (d) 0.0576
29. 29.3.3 × 6 — where does the decimal point go? (a) 0.198 (b) 19.8 (c) 1.98 (d) 198
30. 30.0.34 × 7 — where does the decimal point go? (a) 23.8 (b) 0.0238 (c) 0.238 (d) 2.38
31. 31.0.97 × 1.9 — where does the decimal point go? (a) 0.1843 (b) 1.843 (c) 0.01843 (d) 18.43
32. 32.0.17 × 6 — where does the decimal point go? (a) 10.2 (b) 0.102 (c) 0.0102 (d) 1.02
33. 33.0.22 × 0.4 — where does the decimal point go? (a) 0.0088 (b) 0.00088 (c) 0.088 (d) 0.88
34. 34.0.93 × 5 — where does the decimal point go? (a) 4.65 (b) 0.465 (c) 46.5 (d) 0.0465
35. 35.0.45 × 0.3 — where does the decimal point go? (a) 0.00135 (b) 0.0135 (c) 1.35 (d) 0.135
36. 36.0.51 × 16 — where does the decimal point go? (a) 8.16 (b) 0.816 (c) 0.0816 (d) 81.6
37. 37.0.22 × 32 — where does the decimal point go? (a) 7.04 (b) 0.704 (c) 70.4 (d) 0.0704
38. 38.8.1 × 0.7 — where does the decimal point go? (a) 5.67 (b) 56.7 (c) 0.0567 (d) 0.567
39. 39.2.6 × 3.2 — where does the decimal point go? (a) 83.2 (b) 0.0832 (c) 8.32 (d) 0.832
40. 40.2.5 × 3 — where does the decimal point go? (a) 7.5 (b) 0.075 (c) 0.75 (d) 75

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