Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 171 · 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. 1.0.34 × 36 — where does the decimal point go? (a) 1.224 (b) 122.4 (c) 0.1224 (d) 12.24
2. 2.7.7 × 0.3 — where does the decimal point go? (a) 0.231 (b) 0.0231 (c) 23.1 (d) 2.31
3. 3.4.1 × 33 — where does the decimal point go? (a) 1353 (b) 1.353 (c) 135.3 (d) 13.53
4. 4.0.26 × 1.8 — where does the decimal point go? (a) 4.68 (b) 0.00468 (c) 0.0468 (d) 0.468
5. 5.0.23 × 44 — where does the decimal point go? (a) 0.1012 (b) 1.012 (c) 101.2 (d) 10.12
6. 6.0.99 × 3.5 — where does the decimal point go? (a) 0.3465 (b) 3.465 (c) 34.65 (d) 0.03465
7. 7.4.2 × 7 — where does the decimal point go? (a) 294 (b) 0.294 (c) 2.94 (d) 29.4
8. 8.2.8 × 3.8 — where does the decimal point go? (a) 0.1064 (b) 106.4 (c) 10.64 (d) 1.064
9. 9.4.5 × 0.7 — where does the decimal point go? (a) 0.315 (b) 0.0315 (c) 31.5 (d) 3.15
10. 10.0.41 × 4.3 — where does the decimal point go? (a) 0.01763 (b) 1.763 (c) 17.63 (d) 0.1763
11. 11.0.78 × 2.7 — where does the decimal point go? (a) 0.02106 (b) 21.06 (c) 2.106 (d) 0.2106
12. 12.8.1 × 3 — where does the decimal point go? (a) 243 (b) 24.3 (c) 0.243 (d) 2.43
13. 13.0.22 × 1.6 — where does the decimal point go? (a) 0.0352 (b) 0.00352 (c) 0.352 (d) 3.52
14. 14.0.89 × 0.3 — where does the decimal point go? (a) 0.0267 (b) 0.267 (c) 0.00267 (d) 2.67
15. 15.0.84 × 0.3 — where does the decimal point go? (a) 0.00252 (b) 0.252 (c) 0.0252 (d) 2.52
16. 16.0.39 × 7 — where does the decimal point go? (a) 2.73 (b) 0.0273 (c) 27.3 (d) 0.273
17. 17.3.4 × 6 — where does the decimal point go? (a) 0.204 (b) 2.04 (c) 204 (d) 20.4
18. 18.0.76 × 2 — where does the decimal point go? (a) 15.2 (b) 1.52 (c) 0.152 (d) 0.0152
19. 19.0.58 × 6 — where does the decimal point go? (a) 0.0348 (b) 3.48 (c) 0.348 (d) 34.8
20. 20.0.51 × 14 — where does the decimal point go? (a) 71.4 (b) 7.14 (c) 0.714 (d) 0.0714
21. 21.0.36 × 3.3 — where does the decimal point go? (a) 1.188 (b) 0.1188 (c) 11.88 (d) 0.01188
22. 22.8.5 × 15 — where does the decimal point go? (a) 127.5 (b) 12.75 (c) 1.275 (d) 1275
23. 23.1.7 × 3.4 — where does the decimal point go? (a) 5.78 (b) 57.8 (c) 0.0578 (d) 0.578
24. 24.9.3 × 35 — where does the decimal point go? (a) 3.255 (b) 325.5 (c) 32.55 (d) 3255
25. 25.0.88 × 3 — where does the decimal point go? (a) 26.4 (b) 0.264 (c) 2.64 (d) 0.0264
26. 26.0.96 × 26 — where does the decimal point go? (a) 249.6 (b) 24.96 (c) 0.2496 (d) 2.496
27. 27.3.4 × 0.4 — where does the decimal point go? (a) 1.36 (b) 13.6 (c) 0.0136 (d) 0.136
28. 28.8.8 × 1.9 — where does the decimal point go? (a) 16.72 (b) 0.1672 (c) 167.2 (d) 1.672
29. 29.0.86 × 23 — where does the decimal point go? (a) 0.1978 (b) 19.78 (c) 197.8 (d) 1.978
30. 30.3.2 × 3 — where does the decimal point go? (a) 96 (b) 9.6 (c) 0.96 (d) 0.096
31. 31.9.3 × 46 — where does the decimal point go? (a) 42.78 (b) 4.278 (c) 4278 (d) 427.8
32. 32.0.12 × 2.1 — where does the decimal point go? (a) 0.0252 (b) 0.00252 (c) 0.252 (d) 2.52
33. 33.0.34 × 2 — where does the decimal point go? (a) 0.0068 (b) 0.068 (c) 6.8 (d) 0.68
34. 34.7.4 × 14 — where does the decimal point go? (a) 1.036 (b) 10.36 (c) 103.6 (d) 1036
35. 35.7.2 × 2.3 — where does the decimal point go? (a) 0.1656 (b) 16.56 (c) 1.656 (d) 165.6
36. 36.1.8 × 0.6 — where does the decimal point go? (a) 0.0108 (b) 1.08 (c) 10.8 (d) 0.108
37. 37.1.6 × 1.2 — where does the decimal point go? (a) 0.0192 (b) 19.2 (c) 1.92 (d) 0.192
38. 38.1.9 × 7 — where does the decimal point go? (a) 0.133 (b) 1.33 (c) 133 (d) 13.3
39. 39.6.8 × 2.3 — where does the decimal point go? (a) 0.1564 (b) 1.564 (c) 156.4 (d) 15.64
40. 40.0.23 × 5 — where does the decimal point go? (a) 0.0115 (b) 0.115 (c) 11.5 (d) 1.15

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