Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 546 · 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. 1.0.88 × 4.4 — where does the decimal point go? (a) 3.872 (b) 0.3872 (c) 0.03872 (d) 38.72
2. 2.0.36 × 0.7 — where does the decimal point go? (a) 0.00252 (b) 0.0252 (c) 0.252 (d) 2.52
3. 3.0.25 × 3.7 — where does the decimal point go? (a) 0.0925 (b) 0.925 (c) 0.00925 (d) 9.25
4. 4.0.49 × 2.7 — where does the decimal point go? (a) 1.323 (b) 0.01323 (c) 0.1323 (d) 13.23
5. 5.0.16 × 0.4 — where does the decimal point go? (a) 0.064 (b) 0.64 (c) 0.0064 (d) 0.00064
6. 6.5.3 × 28 — where does the decimal point go? (a) 14.84 (b) 148.4 (c) 1.484 (d) 1484
7. 7.7.7 × 5 — where does the decimal point go? (a) 0.385 (b) 385 (c) 3.85 (d) 38.5
8. 8.2.3 × 0.7 — where does the decimal point go? (a) 0.161 (b) 16.1 (c) 0.0161 (d) 1.61
9. 9.5.6 × 11 — where does the decimal point go? (a) 6.16 (b) 616 (c) 61.6 (d) 0.616
10. 10.0.66 × 3.3 — where does the decimal point go? (a) 2.178 (b) 0.02178 (c) 21.78 (d) 0.2178
11. 11.0.88 × 8 — where does the decimal point go? (a) 0.0704 (b) 70.4 (c) 0.704 (d) 7.04
12. 12.0.89 × 0.5 — where does the decimal point go? (a) 4.45 (b) 0.445 (c) 0.0445 (d) 0.00445
13. 13.0.63 × 41 — where does the decimal point go? (a) 25.83 (b) 0.2583 (c) 2.583 (d) 258.3
14. 14.0.33 × 38 — where does the decimal point go? (a) 125.4 (b) 1.254 (c) 0.1254 (d) 12.54
15. 15.0.78 × 9 — where does the decimal point go? (a) 7.02 (b) 0.702 (c) 0.0702 (d) 70.2
16. 16.5.5 × 3 — where does the decimal point go? (a) 0.165 (b) 165 (c) 16.5 (d) 1.65
17. 17.0.61 × 37 — where does the decimal point go? (a) 2.257 (b) 0.2257 (c) 22.57 (d) 225.7
18. 18.0.33 × 4.4 — where does the decimal point go? (a) 14.52 (b) 0.1452 (c) 0.01452 (d) 1.452
19. 19.0.12 × 1.1 — where does the decimal point go? (a) 0.00132 (b) 0.0132 (c) 1.32 (d) 0.132
20. 20.4.7 × 46 — where does the decimal point go? (a) 2162 (b) 21.62 (c) 216.2 (d) 2.162
21. 21.8.7 × 0.9 — where does the decimal point go? (a) 0.0783 (b) 7.83 (c) 78.3 (d) 0.783
22. 22.7.4 × 0.2 — where does the decimal point go? (a) 0.148 (b) 14.8 (c) 1.48 (d) 0.0148
23. 23.2.1 × 8 — where does the decimal point go? (a) 1.68 (b) 0.168 (c) 16.8 (d) 168
24. 24.0.48 × 7 — where does the decimal point go? (a) 0.336 (b) 0.0336 (c) 3.36 (d) 33.6
25. 25.0.58 × 0.7 — where does the decimal point go? (a) 4.06 (b) 0.0406 (c) 0.406 (d) 0.00406
26. 26.0.76 × 34 — where does the decimal point go? (a) 0.2584 (b) 2.584 (c) 25.84 (d) 258.4
27. 27.0.19 × 0.5 — where does the decimal point go? (a) 0.095 (b) 0.0095 (c) 0.00095 (d) 0.95
28. 28.9.3 × 1.8 — where does the decimal point go? (a) 16.74 (b) 0.1674 (c) 1.674 (d) 167.4
29. 29.8.2 × 0.6 — where does the decimal point go? (a) 0.0492 (b) 4.92 (c) 49.2 (d) 0.492
30. 30.0.49 × 1.1 — where does the decimal point go? (a) 0.539 (b) 0.00539 (c) 5.39 (d) 0.0539
31. 31.4.9 × 22 — where does the decimal point go? (a) 107.8 (b) 1.078 (c) 10.78 (d) 1078
32. 32.3.9 × 4 — where does the decimal point go? (a) 156 (b) 15.6 (c) 1.56 (d) 0.156
33. 33.7.3 × 44 — where does the decimal point go? (a) 3212 (b) 321.2 (c) 3.212 (d) 32.12
34. 34.9.6 × 0.7 — where does the decimal point go? (a) 0.0672 (b) 67.2 (c) 0.672 (d) 6.72
35. 35.3.1 × 1.8 — where does the decimal point go? (a) 0.0558 (b) 0.558 (c) 5.58 (d) 55.8
36. 36.2.3 × 1.4 — where does the decimal point go? (a) 3.22 (b) 0.322 (c) 0.0322 (d) 32.2
37. 37.0.97 × 28 — where does the decimal point go? (a) 27.16 (b) 271.6 (c) 2.716 (d) 0.2716
38. 38.0.78 × 7 — where does the decimal point go? (a) 5.46 (b) 0.0546 (c) 54.6 (d) 0.546
39. 39.9.6 × 0.6 — where does the decimal point go? (a) 0.576 (b) 0.0576 (c) 57.6 (d) 5.76
40. 40.0.16 × 0.9 — where does the decimal point go? (a) 0.0144 (b) 1.44 (c) 0.00144 (d) 0.144

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