Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 530 · 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. 1.0.71 × 2.8 — where does the decimal point go? (a) 0.01988 (b) 1.988 (c) 0.1988 (d) 19.88
2. 2.1.9 × 1.4 — where does the decimal point go? (a) 2.66 (b) 26.6 (c) 0.266 (d) 0.0266
3. 3.0.96 × 26 — where does the decimal point go? (a) 0.2496 (b) 24.96 (c) 249.6 (d) 2.496
4. 4.0.92 × 37 — where does the decimal point go? (a) 340.4 (b) 3.404 (c) 0.3404 (d) 34.04
5. 5.3.5 × 0.7 — where does the decimal point go? (a) 0.245 (b) 0.0245 (c) 24.5 (d) 2.45
6. 6.0.24 × 3 — where does the decimal point go? (a) 0.72 (b) 7.2 (c) 0.0072 (d) 0.072
7. 7.4.4 × 0.7 — where does the decimal point go? (a) 30.8 (b) 0.308 (c) 3.08 (d) 0.0308
8. 8.9.7 × 0.6 — where does the decimal point go? (a) 5.82 (b) 0.582 (c) 58.2 (d) 0.0582
9. 9.0.57 × 0.8 — where does the decimal point go? (a) 0.0456 (b) 0.00456 (c) 4.56 (d) 0.456
10. 10.6.9 × 5 — where does the decimal point go? (a) 34.5 (b) 0.345 (c) 345 (d) 3.45
11. 11.0.53 × 0.8 — where does the decimal point go? (a) 4.24 (b) 0.424 (c) 0.00424 (d) 0.0424
12. 12.4.8 × 2.8 — where does the decimal point go? (a) 13.44 (b) 1.344 (c) 0.1344 (d) 134.4
13. 13.1.4 × 3 — where does the decimal point go? (a) 0.042 (b) 0.42 (c) 4.2 (d) 42
14. 14.0.47 × 4 — where does the decimal point go? (a) 0.0188 (b) 0.188 (c) 1.88 (d) 18.8
15. 15.6.4 × 2.7 — where does the decimal point go? (a) 1.728 (b) 172.8 (c) 0.1728 (d) 17.28
16. 16.0.29 × 29 — where does the decimal point go? (a) 0.0841 (b) 84.1 (c) 8.41 (d) 0.841
17. 17.7.3 × 2 — where does the decimal point go? (a) 1.46 (b) 0.146 (c) 146 (d) 14.6
18. 18.2.6 × 4 — where does the decimal point go? (a) 1.04 (b) 0.104 (c) 104 (d) 10.4
19. 19.0.12 × 29 — where does the decimal point go? (a) 3.48 (b) 0.348 (c) 0.0348 (d) 34.8
20. 20.9.9 × 41 — where does the decimal point go? (a) 405.9 (b) 4059 (c) 4.059 (d) 40.59
21. 21.0.25 × 7 — where does the decimal point go? (a) 17.5 (b) 0.175 (c) 1.75 (d) 0.0175
22. 22.0.74 × 2 — where does the decimal point go? (a) 1.48 (b) 0.148 (c) 0.0148 (d) 14.8
23. 23.0.59 × 9 — where does the decimal point go? (a) 0.531 (b) 0.0531 (c) 53.1 (d) 5.31
24. 24.0.94 × 0.7 — where does the decimal point go? (a) 0.00658 (b) 0.658 (c) 0.0658 (d) 6.58
25. 25.8.7 × 42 — where does the decimal point go? (a) 3.654 (b) 36.54 (c) 365.4 (d) 3654
26. 26.2.6 × 3.8 — where does the decimal point go? (a) 0.0988 (b) 9.88 (c) 0.988 (d) 98.8
27. 27.0.37 × 1.3 — where does the decimal point go? (a) 0.481 (b) 0.0481 (c) 0.00481 (d) 4.81
28. 28.0.91 × 4.9 — where does the decimal point go? (a) 0.04459 (b) 4.459 (c) 0.4459 (d) 44.59
29. 29.3.2 × 0.6 — where does the decimal point go? (a) 0.0192 (b) 19.2 (c) 0.192 (d) 1.92
30. 30.9.3 × 15 — where does the decimal point go? (a) 1.395 (b) 1395 (c) 139.5 (d) 13.95
31. 31.0.12 × 4.6 — where does the decimal point go? (a) 0.552 (b) 0.00552 (c) 0.0552 (d) 5.52
32. 32.0.31 × 33 — where does the decimal point go? (a) 1.023 (b) 10.23 (c) 102.3 (d) 0.1023
33. 33.0.58 × 9 — where does the decimal point go? (a) 52.2 (b) 0.0522 (c) 0.522 (d) 5.22
34. 34.0.93 × 4.3 — where does the decimal point go? (a) 3.999 (b) 39.99 (c) 0.03999 (d) 0.3999
35. 35.0.29 × 0.5 — where does the decimal point go? (a) 0.0145 (b) 0.145 (c) 1.45 (d) 0.00145
36. 36.7.4 × 9 — where does the decimal point go? (a) 66.6 (b) 6.66 (c) 0.666 (d) 666
37. 37.0.47 × 31 — where does the decimal point go? (a) 1.457 (b) 14.57 (c) 0.1457 (d) 145.7
38. 38.8.4 × 0.8 — where does the decimal point go? (a) 6.72 (b) 0.0672 (c) 67.2 (d) 0.672
39. 39.0.42 × 0.9 — where does the decimal point go? (a) 0.378 (b) 0.00378 (c) 3.78 (d) 0.0378
40. 40.5.4 × 1.9 — where does the decimal point go? (a) 102.6 (b) 1.026 (c) 0.1026 (d) 10.26

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