Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 586 · 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 × 0.8 — where does the decimal point go? (a) 0.0488 (b) 0.488 (c) 48.8 (d) 4.88
2. 2.8.8 × 17 — where does the decimal point go? (a) 149.6 (b) 1496 (c) 14.96 (d) 1.496
3. 3.5.3 × 49 — where does the decimal point go? (a) 259.7 (b) 2.597 (c) 2597 (d) 25.97
4. 4.0.33 × 0.5 — where does the decimal point go? (a) 0.165 (b) 0.00165 (c) 0.0165 (d) 1.65
5. 5.0.89 × 1.8 — where does the decimal point go? (a) 0.1602 (b) 0.01602 (c) 16.02 (d) 1.602
6. 6.0.14 × 4.1 — where does the decimal point go? (a) 0.574 (b) 0.00574 (c) 5.74 (d) 0.0574
7. 7.0.14 × 3.6 — where does the decimal point go? (a) 0.0504 (b) 0.504 (c) 5.04 (d) 0.00504
8. 8.0.52 × 43 — where does the decimal point go? (a) 22.36 (b) 2.236 (c) 0.2236 (d) 223.6
9. 9.0.12 × 0.2 — where does the decimal point go? (a) 0.024 (b) 0.00024 (c) 0.24 (d) 0.0024
10. 10.9.7 × 0.3 — where does the decimal point go? (a) 0.0291 (b) 0.291 (c) 29.1 (d) 2.91
11. 11.7.9 × 3.2 — where does the decimal point go? (a) 252.8 (b) 25.28 (c) 2.528 (d) 0.2528
12. 12.0.71 × 6 — where does the decimal point go? (a) 4.26 (b) 0.426 (c) 42.6 (d) 0.0426
13. 13.2.1 × 44 — where does the decimal point go? (a) 9.24 (b) 924 (c) 92.4 (d) 0.924
14. 14.2.3 × 41 — where does the decimal point go? (a) 0.943 (b) 94.3 (c) 9.43 (d) 943
15. 15.2.4 × 3 — where does the decimal point go? (a) 7.2 (b) 0.072 (c) 0.72 (d) 72
16. 16.0.89 × 0.6 — where does the decimal point go? (a) 0.534 (b) 5.34 (c) 0.00534 (d) 0.0534
17. 17.0.69 × 7 — where does the decimal point go? (a) 0.0483 (b) 0.483 (c) 48.3 (d) 4.83
18. 18.0.23 × 16 — where does the decimal point go? (a) 0.0368 (b) 0.368 (c) 36.8 (d) 3.68
19. 19.8.7 × 23 — where does the decimal point go? (a) 20.01 (b) 200.1 (c) 2001 (d) 2.001
20. 20.8.3 × 5 — where does the decimal point go? (a) 4.15 (b) 415 (c) 0.415 (d) 41.5
21. 21.4.7 × 37 — where does the decimal point go? (a) 17.39 (b) 1739 (c) 1.739 (d) 173.9
22. 22.0.17 × 1.9 — where does the decimal point go? (a) 3.23 (b) 0.00323 (c) 0.0323 (d) 0.323
23. 23.0.56 × 0.4 — where does the decimal point go? (a) 0.00224 (b) 0.224 (c) 2.24 (d) 0.0224
24. 24.7.2 × 7 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 504 (d) 50.4
25. 25.0.77 × 4.7 — where does the decimal point go? (a) 0.3619 (b) 36.19 (c) 0.03619 (d) 3.619
26. 26.4.9 × 5 — where does the decimal point go? (a) 0.245 (b) 245 (c) 24.5 (d) 2.45
27. 27.2.9 × 0.9 — where does the decimal point go? (a) 0.261 (b) 2.61 (c) 0.0261 (d) 26.1
28. 28.0.95 × 7 — where does the decimal point go? (a) 0.665 (b) 0.0665 (c) 6.65 (d) 66.5
29. 29.8.9 × 5 — where does the decimal point go? (a) 445 (b) 44.5 (c) 0.445 (d) 4.45
30. 30.0.51 × 17 — where does the decimal point go? (a) 86.7 (b) 0.0867 (c) 0.867 (d) 8.67
31. 31.0.72 × 0.7 — where does the decimal point go? (a) 0.0504 (b) 0.504 (c) 5.04 (d) 0.00504
32. 32.0.81 × 0.2 — where does the decimal point go? (a) 0.0162 (b) 0.00162 (c) 1.62 (d) 0.162
33. 33.9.9 × 7 — where does the decimal point go? (a) 6.93 (b) 693 (c) 0.693 (d) 69.3
34. 34.6.5 × 2.5 — where does the decimal point go? (a) 1.625 (b) 0.1625 (c) 16.25 (d) 162.5
35. 35.8.2 × 2 — where does the decimal point go? (a) 0.164 (b) 1.64 (c) 16.4 (d) 164
36. 36.0.59 × 7 — where does the decimal point go? (a) 0.413 (b) 4.13 (c) 41.3 (d) 0.0413
37. 37.6.8 × 4.3 — where does the decimal point go? (a) 0.2924 (b) 29.24 (c) 2.924 (d) 292.4
38. 38.7.1 × 0.3 — where does the decimal point go? (a) 0.0213 (b) 2.13 (c) 21.3 (d) 0.213
39. 39.0.29 × 14 — where does the decimal point go? (a) 40.6 (b) 4.06 (c) 0.0406 (d) 0.406
40. 40.0.92 × 37 — where does the decimal point go? (a) 0.3404 (b) 340.4 (c) 3.404 (d) 34.04

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