Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 803 · 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. 1.0.61 × 17 — where does the decimal point go? (a) 10.37 (b) 103.7 (c) 1.037 (d) 0.1037
2. 2.5.7 × 35 — where does the decimal point go? (a) 199.5 (b) 1995 (c) 1.995 (d) 19.95
3. 3.1.2 × 0.3 — where does the decimal point go? (a) 0.36 (b) 0.036 (c) 3.6 (d) 0.0036
4. 4.4.4 × 2.8 — where does the decimal point go? (a) 1.232 (b) 123.2 (c) 12.32 (d) 0.1232
5. 5.0.66 × 3 — where does the decimal point go? (a) 0.198 (b) 1.98 (c) 0.0198 (d) 19.8
6. 6.0.34 × 1.3 — where does the decimal point go? (a) 0.00442 (b) 0.0442 (c) 4.42 (d) 0.442
7. 7.5.3 × 1.9 — where does the decimal point go? (a) 0.1007 (b) 10.07 (c) 1.007 (d) 100.7
8. 8.0.99 × 0.8 — where does the decimal point go? (a) 0.792 (b) 7.92 (c) 0.0792 (d) 0.00792
9. 9.3.2 × 3.9 — where does the decimal point go? (a) 1.248 (b) 124.8 (c) 12.48 (d) 0.1248
10. 10.7.1 × 0.4 — where does the decimal point go? (a) 0.0284 (b) 2.84 (c) 0.284 (d) 28.4
11. 11.0.27 × 26 — where does the decimal point go? (a) 70.2 (b) 7.02 (c) 0.702 (d) 0.0702
12. 12.0.45 × 0.5 — where does the decimal point go? (a) 0.0225 (b) 0.00225 (c) 0.225 (d) 2.25
13. 13.5.9 × 2.9 — where does the decimal point go? (a) 1.711 (b) 0.1711 (c) 171.1 (d) 17.11
14. 14.0.24 × 3.9 — where does the decimal point go? (a) 0.936 (b) 9.36 (c) 0.00936 (d) 0.0936
15. 15.0.73 × 2.4 — where does the decimal point go? (a) 0.1752 (b) 17.52 (c) 1.752 (d) 0.01752
16. 16.3.4 × 32 — where does the decimal point go? (a) 108.8 (b) 1.088 (c) 10.88 (d) 1088
17. 17.0.73 × 3 — where does the decimal point go? (a) 21.9 (b) 0.0219 (c) 0.219 (d) 2.19
18. 18.0.48 × 0.8 — where does the decimal point go? (a) 3.84 (b) 0.00384 (c) 0.0384 (d) 0.384
19. 19.0.53 × 0.5 — where does the decimal point go? (a) 0.00265 (b) 2.65 (c) 0.0265 (d) 0.265
20. 20.0.31 × 0.4 — where does the decimal point go? (a) 0.00124 (b) 1.24 (c) 0.124 (d) 0.0124
21. 21.1.3 × 0.5 — where does the decimal point go? (a) 0.65 (b) 0.0065 (c) 6.5 (d) 0.065
22. 22.8.1 × 42 — where does the decimal point go? (a) 3.402 (b) 3402 (c) 340.2 (d) 34.02
23. 23.6.6 × 0.6 — where does the decimal point go? (a) 3.96 (b) 39.6 (c) 0.0396 (d) 0.396
24. 24.0.24 × 3.2 — where does the decimal point go? (a) 0.0768 (b) 7.68 (c) 0.00768 (d) 0.768
25. 25.0.72 × 47 — where does the decimal point go? (a) 338.4 (b) 33.84 (c) 3.384 (d) 0.3384
26. 26.1.8 × 3.2 — where does the decimal point go? (a) 0.576 (b) 57.6 (c) 0.0576 (d) 5.76
27. 27.9.1 × 3.8 — where does the decimal point go? (a) 3.458 (b) 34.58 (c) 345.8 (d) 0.3458
28. 28.3.7 × 9 — where does the decimal point go? (a) 333 (b) 0.333 (c) 3.33 (d) 33.3
29. 29.0.82 × 0.7 — where does the decimal point go? (a) 0.00574 (b) 0.0574 (c) 0.574 (d) 5.74
30. 30.0.33 × 0.6 — where does the decimal point go? (a) 0.00198 (b) 1.98 (c) 0.198 (d) 0.0198
31. 31.0.94 × 47 — where does the decimal point go? (a) 4.418 (b) 441.8 (c) 44.18 (d) 0.4418
32. 32.2.7 × 0.6 — where does the decimal point go? (a) 0.162 (b) 16.2 (c) 0.0162 (d) 1.62
33. 33.0.88 × 0.3 — where does the decimal point go? (a) 0.264 (b) 0.00264 (c) 2.64 (d) 0.0264
34. 34.8.2 × 11 — where does the decimal point go? (a) 90.2 (b) 902 (c) 0.902 (d) 9.02
35. 35.4.8 × 48 — where does the decimal point go? (a) 2304 (b) 2.304 (c) 23.04 (d) 230.4
36. 36.5.3 × 4.5 — where does the decimal point go? (a) 2.385 (b) 23.85 (c) 0.2385 (d) 238.5
37. 37.0.36 × 0.7 — where does the decimal point go? (a) 0.252 (b) 0.00252 (c) 0.0252 (d) 2.52
38. 38.1.3 × 4.9 — where does the decimal point go? (a) 6.37 (b) 0.637 (c) 63.7 (d) 0.0637
39. 39.0.96 × 38 — where does the decimal point go? (a) 0.3648 (b) 364.8 (c) 36.48 (d) 3.648
40. 40.4.8 × 0.4 — where does the decimal point go? (a) 1.92 (b) 0.192 (c) 0.0192 (d) 19.2

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