Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 798 · 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. 1.8.5 × 4.3 — where does the decimal point go? (a) 365.5 (b) 3.655 (c) 36.55 (d) 0.3655
2. 2.2.6 × 0.6 — where does the decimal point go? (a) 0.156 (b) 0.0156 (c) 1.56 (d) 15.6
3. 3.5.2 × 3.1 — where does the decimal point go? (a) 16.12 (b) 1.612 (c) 0.1612 (d) 161.2
4. 4.3.2 × 7 — where does the decimal point go? (a) 22.4 (b) 2.24 (c) 224 (d) 0.224
5. 5.0.33 × 0.9 — where does the decimal point go? (a) 0.00297 (b) 0.0297 (c) 0.297 (d) 2.97
6. 6.0.57 × 0.7 — where does the decimal point go? (a) 0.399 (b) 0.00399 (c) 0.0399 (d) 3.99
7. 7.0.62 × 8 — where does the decimal point go? (a) 4.96 (b) 0.496 (c) 49.6 (d) 0.0496
8. 8.2.2 × 0.2 — where does the decimal point go? (a) 0.44 (b) 0.044 (c) 4.4 (d) 0.0044
9. 9.0.22 × 2.6 — where does the decimal point go? (a) 5.72 (b) 0.00572 (c) 0.572 (d) 0.0572
10. 10.0.27 × 4.4 — where does the decimal point go? (a) 11.88 (b) 0.1188 (c) 0.01188 (d) 1.188
11. 11.2.1 × 0.5 — where does the decimal point go? (a) 0.0105 (b) 0.105 (c) 1.05 (d) 10.5
12. 12.7.5 × 5 — where does the decimal point go? (a) 0.375 (b) 3.75 (c) 37.5 (d) 375
13. 13.8.5 × 3 — where does the decimal point go? (a) 0.255 (b) 25.5 (c) 2.55 (d) 255
14. 14.0.32 × 3.3 — where does the decimal point go? (a) 0.1056 (b) 1.056 (c) 0.01056 (d) 10.56
15. 15.1.7 × 7 — where does the decimal point go? (a) 119 (b) 0.119 (c) 11.9 (d) 1.19
16. 16.0.31 × 0.4 — where does the decimal point go? (a) 1.24 (b) 0.124 (c) 0.0124 (d) 0.00124
17. 17.5.9 × 11 — where does the decimal point go? (a) 6.49 (b) 64.9 (c) 649 (d) 0.649
18. 18.0.34 × 2.3 — where does the decimal point go? (a) 0.00782 (b) 0.0782 (c) 0.782 (d) 7.82
19. 19.7.4 × 2.9 — where does the decimal point go? (a) 2.146 (b) 0.2146 (c) 21.46 (d) 214.6
20. 20.0.31 × 2.6 — where does the decimal point go? (a) 0.00806 (b) 0.0806 (c) 0.806 (d) 8.06
21. 21.1.8 × 1.4 — where does the decimal point go? (a) 2.52 (b) 0.0252 (c) 25.2 (d) 0.252
22. 22.8.4 × 1.6 — where does the decimal point go? (a) 1.344 (b) 0.1344 (c) 134.4 (d) 13.44
23. 23.8.9 × 36 — where does the decimal point go? (a) 32.04 (b) 3204 (c) 320.4 (d) 3.204
24. 24.7.6 × 2 — where does the decimal point go? (a) 1.52 (b) 152 (c) 0.152 (d) 15.2
25. 25.0.12 × 0.3 — where does the decimal point go? (a) 0.36 (b) 0.00036 (c) 0.0036 (d) 0.036
26. 26.0.81 × 29 — where does the decimal point go? (a) 234.9 (b) 0.2349 (c) 23.49 (d) 2.349
27. 27.0.62 × 7 — where does the decimal point go? (a) 0.434 (b) 0.0434 (c) 43.4 (d) 4.34
28. 28.8.4 × 49 — where does the decimal point go? (a) 41.16 (b) 4116 (c) 411.6 (d) 4.116
29. 29.1.9 × 4 — where does the decimal point go? (a) 7.6 (b) 76 (c) 0.76 (d) 0.076
30. 30.0.42 × 0.2 — where does the decimal point go? (a) 0.00084 (b) 0.84 (c) 0.084 (d) 0.0084
31. 31.6.6 × 4.1 — where does the decimal point go? (a) 0.2706 (b) 2.706 (c) 27.06 (d) 270.6
32. 32.0.67 × 43 — where does the decimal point go? (a) 288.1 (b) 28.81 (c) 0.2881 (d) 2.881
33. 33.0.61 × 0.5 — where does the decimal point go? (a) 3.05 (b) 0.0305 (c) 0.00305 (d) 0.305
34. 34.0.27 × 47 — where does the decimal point go? (a) 1.269 (b) 0.1269 (c) 126.9 (d) 12.69
35. 35.0.49 × 38 — where does the decimal point go? (a) 0.1862 (b) 186.2 (c) 18.62 (d) 1.862
36. 36.6.3 × 2.7 — where does the decimal point go? (a) 1.701 (b) 17.01 (c) 170.1 (d) 0.1701
37. 37.4.9 × 3.1 — where does the decimal point go? (a) 15.19 (b) 1.519 (c) 151.9 (d) 0.1519
38. 38.0.13 × 3.7 — where does the decimal point go? (a) 0.481 (b) 0.00481 (c) 4.81 (d) 0.0481
39. 39.7.6 × 2.2 — where does the decimal point go? (a) 16.72 (b) 0.1672 (c) 1.672 (d) 167.2
40. 40.0.47 × 9 — where does the decimal point go? (a) 0.0423 (b) 0.423 (c) 4.23 (d) 42.3

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