Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 515 · 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. 1.6.1 × 2.4 — where does the decimal point go? (a) 1.464 (b) 146.4 (c) 14.64 (d) 0.1464
2. 2.7.4 × 0.7 — where does the decimal point go? (a) 0.0518 (b) 5.18 (c) 51.8 (d) 0.518
3. 3.0.92 × 2 — where does the decimal point go? (a) 1.84 (b) 0.184 (c) 18.4 (d) 0.0184
4. 4.6.5 × 2.5 — where does the decimal point go? (a) 1.625 (b) 162.5 (c) 16.25 (d) 0.1625
5. 5.0.16 × 0.7 — where does the decimal point go? (a) 0.112 (b) 0.0112 (c) 0.00112 (d) 1.12
6. 6.0.91 × 3.9 — where does the decimal point go? (a) 35.49 (b) 3.549 (c) 0.3549 (d) 0.03549
7. 7.0.35 × 0.3 — where does the decimal point go? (a) 0.00105 (b) 0.105 (c) 0.0105 (d) 1.05
8. 8.7.3 × 0.2 — where does the decimal point go? (a) 0.146 (b) 1.46 (c) 14.6 (d) 0.0146
9. 9.0.71 × 37 — where does the decimal point go? (a) 0.2627 (b) 26.27 (c) 262.7 (d) 2.627
10. 10.1.7 × 4.4 — where does the decimal point go? (a) 7.48 (b) 74.8 (c) 0.0748 (d) 0.748
11. 11.7.9 × 25 — where does the decimal point go? (a) 1.975 (b) 1975 (c) 197.5 (d) 19.75
12. 12.0.44 × 17 — where does the decimal point go? (a) 0.748 (b) 74.8 (c) 0.0748 (d) 7.48
13. 13.1.9 × 32 — where does the decimal point go? (a) 60.8 (b) 6.08 (c) 0.608 (d) 608
14. 14.2.3 × 0.3 — where does the decimal point go? (a) 0.69 (b) 0.069 (c) 0.0069 (d) 6.9
15. 15.0.44 × 12 — where does the decimal point go? (a) 52.8 (b) 0.528 (c) 5.28 (d) 0.0528
16. 16.0.97 × 2.7 — where does the decimal point go? (a) 0.2619 (b) 2.619 (c) 0.02619 (d) 26.19
17. 17.0.28 × 7 — where does the decimal point go? (a) 0.0196 (b) 1.96 (c) 19.6 (d) 0.196
18. 18.0.49 × 1.3 — where does the decimal point go? (a) 0.00637 (b) 0.637 (c) 0.0637 (d) 6.37
19. 19.0.49 × 0.2 — where does the decimal point go? (a) 0.00098 (b) 0.98 (c) 0.098 (d) 0.0098
20. 20.0.92 × 0.8 — where does the decimal point go? (a) 0.0736 (b) 0.00736 (c) 7.36 (d) 0.736
21. 21.5.3 × 37 — where does the decimal point go? (a) 1.961 (b) 196.1 (c) 19.61 (d) 1961
22. 22.0.13 × 3.6 — where does the decimal point go? (a) 0.00468 (b) 0.468 (c) 4.68 (d) 0.0468
23. 23.0.17 × 3.4 — where does the decimal point go? (a) 5.78 (b) 0.00578 (c) 0.0578 (d) 0.578
24. 24.7.1 × 22 — where does the decimal point go? (a) 1562 (b) 15.62 (c) 1.562 (d) 156.2
25. 25.3.2 × 1.2 — where does the decimal point go? (a) 38.4 (b) 3.84 (c) 0.384 (d) 0.0384
26. 26.0.41 × 3.9 — where does the decimal point go? (a) 0.1599 (b) 1.599 (c) 0.01599 (d) 15.99
27. 27.4.1 × 3.1 — where does the decimal point go? (a) 1.271 (b) 127.1 (c) 12.71 (d) 0.1271
28. 28.0.18 × 2.2 — where does the decimal point go? (a) 0.396 (b) 0.00396 (c) 3.96 (d) 0.0396
29. 29.4.2 × 0.4 — where does the decimal point go? (a) 0.168 (b) 0.0168 (c) 1.68 (d) 16.8
30. 30.8.9 × 21 — where does the decimal point go? (a) 18.69 (b) 1869 (c) 1.869 (d) 186.9
31. 31.3.7 × 0.4 — where does the decimal point go? (a) 14.8 (b) 0.148 (c) 0.0148 (d) 1.48
32. 32.8.8 × 17 — where does the decimal point go? (a) 1496 (b) 14.96 (c) 149.6 (d) 1.496
33. 33.2.9 × 1.3 — where does the decimal point go? (a) 0.377 (b) 0.0377 (c) 3.77 (d) 37.7
34. 34.2.1 × 0.8 — where does the decimal point go? (a) 0.168 (b) 16.8 (c) 0.0168 (d) 1.68
35. 35.1.2 × 0.3 — where does the decimal point go? (a) 3.6 (b) 0.36 (c) 0.036 (d) 0.0036
36. 36.0.42 × 3.2 — where does the decimal point go? (a) 0.1344 (b) 0.01344 (c) 1.344 (d) 13.44
37. 37.0.33 × 2.5 — where does the decimal point go? (a) 8.25 (b) 0.0825 (c) 0.825 (d) 0.00825
38. 38.2.3 × 3 — where does the decimal point go? (a) 0.069 (b) 6.9 (c) 69 (d) 0.69
39. 39.0.33 × 22 — where does the decimal point go? (a) 72.6 (b) 7.26 (c) 0.726 (d) 0.0726
40. 40.2.5 × 9 — where does the decimal point go? (a) 225 (b) 2.25 (c) 0.225 (d) 22.5

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