Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 256 · 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. 1.0.84 × 2.6 — where does the decimal point go? (a) 0.2184 (b) 21.84 (c) 2.184 (d) 0.02184
2. 2.0.43 × 18 — where does the decimal point go? (a) 7.74 (b) 77.4 (c) 0.774 (d) 0.0774
3. 3.5.2 × 1.6 — where does the decimal point go? (a) 0.0832 (b) 0.832 (c) 8.32 (d) 83.2
4. 4.4.2 × 4 — where does the decimal point go? (a) 1.68 (b) 0.168 (c) 16.8 (d) 168
5. 5.0.91 × 4.9 — where does the decimal point go? (a) 0.4459 (b) 0.04459 (c) 44.59 (d) 4.459
6. 6.4.6 × 2.7 — where does the decimal point go? (a) 1.242 (b) 124.2 (c) 12.42 (d) 0.1242
7. 7.7.2 × 37 — where does the decimal point go? (a) 26.64 (b) 266.4 (c) 2.664 (d) 2664
8. 8.7.8 × 9 — where does the decimal point go? (a) 70.2 (b) 0.702 (c) 7.02 (d) 702
9. 9.0.92 × 2.3 — where does the decimal point go? (a) 2.116 (b) 0.02116 (c) 21.16 (d) 0.2116
10. 10.9.9 × 7 — where does the decimal point go? (a) 0.693 (b) 6.93 (c) 69.3 (d) 693
11. 11.0.13 × 4.6 — where does the decimal point go? (a) 0.0598 (b) 0.00598 (c) 0.598 (d) 5.98
12. 12.0.93 × 3 — where does the decimal point go? (a) 0.279 (b) 0.0279 (c) 27.9 (d) 2.79
13. 13.1.5 × 17 — where does the decimal point go? (a) 255 (b) 25.5 (c) 0.255 (d) 2.55
14. 14.0.22 × 7 — where does the decimal point go? (a) 15.4 (b) 0.0154 (c) 1.54 (d) 0.154
15. 15.0.69 × 0.4 — where does the decimal point go? (a) 0.276 (b) 0.0276 (c) 0.00276 (d) 2.76
16. 16.0.62 × 3.8 — where does the decimal point go? (a) 2.356 (b) 0.2356 (c) 23.56 (d) 0.02356
17. 17.0.94 × 4 — where does the decimal point go? (a) 0.376 (b) 3.76 (c) 37.6 (d) 0.0376
18. 18.0.98 × 11 — where does the decimal point go? (a) 10.78 (b) 1.078 (c) 107.8 (d) 0.1078
19. 19.9.4 × 44 — where does the decimal point go? (a) 4.136 (b) 413.6 (c) 41.36 (d) 4136
20. 20.0.85 × 11 — where does the decimal point go? (a) 0.935 (b) 9.35 (c) 0.0935 (d) 93.5
21. 21.5.9 × 27 — where does the decimal point go? (a) 159.3 (b) 15.93 (c) 1593 (d) 1.593
22. 22.0.69 × 4 — where does the decimal point go? (a) 0.276 (b) 0.0276 (c) 2.76 (d) 27.6
23. 23.0.68 × 3.4 — where does the decimal point go? (a) 23.12 (b) 0.2312 (c) 0.02312 (d) 2.312
24. 24.0.28 × 1.8 — where does the decimal point go? (a) 0.0504 (b) 0.00504 (c) 0.504 (d) 5.04
25. 25.0.75 × 41 — where does the decimal point go? (a) 30.75 (b) 3.075 (c) 307.5 (d) 0.3075
26. 26.4.8 × 0.8 — where does the decimal point go? (a) 38.4 (b) 3.84 (c) 0.384 (d) 0.0384
27. 27.0.87 × 29 — where does the decimal point go? (a) 252.3 (b) 0.2523 (c) 25.23 (d) 2.523
28. 28.0.31 × 11 — where does the decimal point go? (a) 3.41 (b) 0.341 (c) 0.0341 (d) 34.1
29. 29.9.4 × 1.6 — where does the decimal point go? (a) 0.1504 (b) 150.4 (c) 1.504 (d) 15.04
30. 30.0.86 × 21 — where does the decimal point go? (a) 18.06 (b) 1.806 (c) 0.1806 (d) 180.6
31. 31.4.9 × 0.2 — where does the decimal point go? (a) 9.8 (b) 0.98 (c) 0.098 (d) 0.0098
32. 32.7.9 × 3.8 — where does the decimal point go? (a) 30.02 (b) 300.2 (c) 3.002 (d) 0.3002
33. 33.0.59 × 37 — where does the decimal point go? (a) 2.183 (b) 0.2183 (c) 21.83 (d) 218.3
34. 34.0.13 × 2.7 — where does the decimal point go? (a) 0.00351 (b) 0.351 (c) 0.0351 (d) 3.51
35. 35.0.92 × 1.6 — where does the decimal point go? (a) 0.1472 (b) 14.72 (c) 0.01472 (d) 1.472
36. 36.7.2 × 17 — where does the decimal point go? (a) 122.4 (b) 1224 (c) 1.224 (d) 12.24
37. 37.0.86 × 9 — where does the decimal point go? (a) 0.774 (b) 77.4 (c) 0.0774 (d) 7.74
38. 38.7.6 × 1.7 — where does the decimal point go? (a) 129.2 (b) 0.1292 (c) 12.92 (d) 1.292
39. 39.0.31 × 0.3 — where does the decimal point go? (a) 0.00093 (b) 0.093 (c) 0.93 (d) 0.0093
40. 40.2.6 × 0.8 — where does the decimal point go? (a) 2.08 (b) 0.0208 (c) 0.208 (d) 20.8

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