Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 472 · 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. 1.6.4 × 42 — where does the decimal point go? (a) 2688 (b) 26.88 (c) 268.8 (d) 2.688
2. 2.8.8 × 1.3 — where does the decimal point go? (a) 1.144 (b) 0.1144 (c) 11.44 (d) 114.4
3. 3.8.3 × 21 — where does the decimal point go? (a) 1.743 (b) 1743 (c) 17.43 (d) 174.3
4. 4.7.9 × 3.9 — where does the decimal point go? (a) 3.081 (b) 30.81 (c) 0.3081 (d) 308.1
5. 5.2.3 × 2.6 — where does the decimal point go? (a) 5.98 (b) 0.598 (c) 59.8 (d) 0.0598
6. 6.2.8 × 0.2 — where does the decimal point go? (a) 0.56 (b) 0.0056 (c) 5.6 (d) 0.056
7. 7.0.93 × 0.8 — where does the decimal point go? (a) 7.44 (b) 0.0744 (c) 0.00744 (d) 0.744
8. 8.2.4 × 2.7 — where does the decimal point go? (a) 0.0648 (b) 0.648 (c) 6.48 (d) 64.8
9. 9.7.2 × 4.4 — where does the decimal point go? (a) 0.3168 (b) 316.8 (c) 3.168 (d) 31.68
10. 10.3.4 × 4.2 — where does the decimal point go? (a) 14.28 (b) 142.8 (c) 0.1428 (d) 1.428
11. 11.7.7 × 0.7 — where does the decimal point go? (a) 53.9 (b) 5.39 (c) 0.0539 (d) 0.539
12. 12.3.9 × 42 — where does the decimal point go? (a) 16.38 (b) 163.8 (c) 1638 (d) 1.638
13. 13.0.19 × 12 — where does the decimal point go? (a) 2.28 (b) 22.8 (c) 0.228 (d) 0.0228
14. 14.2.4 × 7 — where does the decimal point go? (a) 0.168 (b) 1.68 (c) 16.8 (d) 168
15. 15.0.34 × 9 — where does the decimal point go? (a) 3.06 (b) 0.0306 (c) 0.306 (d) 30.6
16. 16.4.2 × 2 — where does the decimal point go? (a) 8.4 (b) 84 (c) 0.084 (d) 0.84
17. 17.0.78 × 39 — where does the decimal point go? (a) 0.3042 (b) 3.042 (c) 30.42 (d) 304.2
18. 18.8.6 × 4 — where does the decimal point go? (a) 34.4 (b) 0.344 (c) 344 (d) 3.44
19. 19.0.89 × 0.6 — where does the decimal point go? (a) 0.00534 (b) 0.534 (c) 0.0534 (d) 5.34
20. 20.5.9 × 3 — where does the decimal point go? (a) 17.7 (b) 1.77 (c) 0.177 (d) 177
21. 21.2.3 × 3 — where does the decimal point go? (a) 6.9 (b) 0.069 (c) 69 (d) 0.69
22. 22.0.19 × 3 — where does the decimal point go? (a) 5.7 (b) 0.0057 (c) 0.57 (d) 0.057
23. 23.0.89 × 29 — where does the decimal point go? (a) 0.2581 (b) 2.581 (c) 25.81 (d) 258.1
24. 24.0.36 × 7 — where does the decimal point go? (a) 0.252 (b) 25.2 (c) 2.52 (d) 0.0252
25. 25.3.9 × 0.5 — where does the decimal point go? (a) 0.0195 (b) 0.195 (c) 19.5 (d) 1.95
26. 26.0.25 × 9 — where does the decimal point go? (a) 2.25 (b) 0.225 (c) 22.5 (d) 0.0225
27. 27.8.1 × 0.5 — where does the decimal point go? (a) 4.05 (b) 0.405 (c) 40.5 (d) 0.0405
28. 28.0.34 × 0.2 — where does the decimal point go? (a) 0.0068 (b) 0.68 (c) 0.00068 (d) 0.068
29. 29.0.66 × 3 — where does the decimal point go? (a) 19.8 (b) 0.198 (c) 0.0198 (d) 1.98
30. 30.0.58 × 3 — where does the decimal point go? (a) 0.0174 (b) 1.74 (c) 0.174 (d) 17.4
31. 31.0.31 × 0.4 — where does the decimal point go? (a) 1.24 (b) 0.00124 (c) 0.124 (d) 0.0124
32. 32.0.88 × 22 — where does the decimal point go? (a) 19.36 (b) 1.936 (c) 0.1936 (d) 193.6
33. 33.2.4 × 44 — where does the decimal point go? (a) 1056 (b) 10.56 (c) 1.056 (d) 105.6
34. 34.8.3 × 1.3 — where does the decimal point go? (a) 1.079 (b) 0.1079 (c) 107.9 (d) 10.79
35. 35.0.42 × 0.7 — where does the decimal point go? (a) 0.0294 (b) 0.294 (c) 2.94 (d) 0.00294
36. 36.4.8 × 0.9 — where does the decimal point go? (a) 0.432 (b) 0.0432 (c) 43.2 (d) 4.32
37. 37.9.6 × 4.2 — where does the decimal point go? (a) 40.32 (b) 4.032 (c) 403.2 (d) 0.4032
38. 38.0.37 × 7 — where does the decimal point go? (a) 0.0259 (b) 0.259 (c) 2.59 (d) 25.9
39. 39.2.1 × 6 — where does the decimal point go? (a) 1.26 (b) 0.126 (c) 12.6 (d) 126
40. 40.6.1 × 5 — where does the decimal point go? (a) 305 (b) 3.05 (c) 0.305 (d) 30.5

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