Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 642 · 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 × 0.7 — where does the decimal point go? (a) 0.00497 (b) 4.97 (c) 0.497 (d) 0.0497
2. 2.0.87 × 0.2 — where does the decimal point go? (a) 0.0174 (b) 0.00174 (c) 1.74 (d) 0.174
3. 3.9.4 × 0.4 — where does the decimal point go? (a) 37.6 (b) 0.376 (c) 3.76 (d) 0.0376
4. 4.0.37 × 2 — where does the decimal point go? (a) 7.4 (b) 0.74 (c) 0.074 (d) 0.0074
5. 5.0.26 × 0.2 — where does the decimal point go? (a) 0.052 (b) 0.0052 (c) 0.00052 (d) 0.52
6. 6.8.1 × 8 — where does the decimal point go? (a) 0.648 (b) 648 (c) 6.48 (d) 64.8
7. 7.0.13 × 7 — where does the decimal point go? (a) 0.091 (b) 0.91 (c) 9.1 (d) 0.0091
8. 8.0.48 × 0.3 — where does the decimal point go? (a) 1.44 (b) 0.144 (c) 0.0144 (d) 0.00144
9. 9.8.4 × 0.4 — where does the decimal point go? (a) 0.0336 (b) 0.336 (c) 33.6 (d) 3.36
10. 10.0.68 × 8 — where does the decimal point go? (a) 0.544 (b) 0.0544 (c) 54.4 (d) 5.44
11. 11.9.7 × 0.3 — where does the decimal point go? (a) 0.0291 (b) 2.91 (c) 29.1 (d) 0.291
12. 12.5.4 × 4.7 — where does the decimal point go? (a) 0.2538 (b) 25.38 (c) 253.8 (d) 2.538
13. 13.5.5 × 3.7 — where does the decimal point go? (a) 20.35 (b) 0.2035 (c) 203.5 (d) 2.035
14. 14.0.51 × 5 — where does the decimal point go? (a) 2.55 (b) 25.5 (c) 0.0255 (d) 0.255
15. 15.0.53 × 8 — where does the decimal point go? (a) 4.24 (b) 42.4 (c) 0.0424 (d) 0.424
16. 16.0.84 × 3 — where does the decimal point go? (a) 0.0252 (b) 2.52 (c) 0.252 (d) 25.2
17. 17.4.4 × 6 — where does the decimal point go? (a) 26.4 (b) 0.264 (c) 2.64 (d) 264
18. 18.0.19 × 19 — where does the decimal point go? (a) 0.361 (b) 3.61 (c) 0.0361 (d) 36.1
19. 19.0.78 × 3 — where does the decimal point go? (a) 0.234 (b) 2.34 (c) 0.0234 (d) 23.4
20. 20.0.93 × 2.1 — where does the decimal point go? (a) 1.953 (b) 19.53 (c) 0.1953 (d) 0.01953
21. 21.0.78 × 4.6 — where does the decimal point go? (a) 3.588 (b) 0.03588 (c) 35.88 (d) 0.3588
22. 22.0.67 × 4 — where does the decimal point go? (a) 0.0268 (b) 2.68 (c) 0.268 (d) 26.8
23. 23.8.2 × 0.3 — where does the decimal point go? (a) 0.0246 (b) 24.6 (c) 0.246 (d) 2.46
24. 24.8.7 × 7 — where does the decimal point go? (a) 60.9 (b) 0.609 (c) 609 (d) 6.09
25. 25.0.93 × 0.5 — where does the decimal point go? (a) 0.465 (b) 4.65 (c) 0.00465 (d) 0.0465
26. 26.7.7 × 2.1 — where does the decimal point go? (a) 161.7 (b) 16.17 (c) 0.1617 (d) 1.617
27. 27.0.31 × 26 — where does the decimal point go? (a) 0.806 (b) 8.06 (c) 0.0806 (d) 80.6
28. 28.0.37 × 1.3 — where does the decimal point go? (a) 0.00481 (b) 0.0481 (c) 4.81 (d) 0.481
29. 29.4.4 × 16 — where does the decimal point go? (a) 0.704 (b) 7.04 (c) 704 (d) 70.4
30. 30.2.1 × 13 — where does the decimal point go? (a) 2.73 (b) 0.273 (c) 273 (d) 27.3
31. 31.0.46 × 6 — where does the decimal point go? (a) 0.0276 (b) 2.76 (c) 27.6 (d) 0.276
32. 32.5.5 × 0.3 — where does the decimal point go? (a) 0.0165 (b) 0.165 (c) 1.65 (d) 16.5
33. 33.0.91 × 6 — where does the decimal point go? (a) 0.0546 (b) 0.546 (c) 54.6 (d) 5.46
34. 34.0.97 × 2.6 — where does the decimal point go? (a) 0.2522 (b) 0.02522 (c) 2.522 (d) 25.22
35. 35.5.6 × 3.4 — where does the decimal point go? (a) 1.904 (b) 19.04 (c) 190.4 (d) 0.1904
36. 36.0.94 × 2.6 — where does the decimal point go? (a) 2.444 (b) 0.2444 (c) 0.02444 (d) 24.44
37. 37.6.3 × 2.2 — where does the decimal point go? (a) 138.6 (b) 0.1386 (c) 13.86 (d) 1.386
38. 38.0.47 × 2.4 — where does the decimal point go? (a) 0.1128 (b) 1.128 (c) 0.01128 (d) 11.28
39. 39.0.84 × 6 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 0.0504 (d) 0.504
40. 40.0.91 × 3.1 — where does the decimal point go? (a) 0.02821 (b) 28.21 (c) 2.821 (d) 0.2821

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