Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 672 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.36 × 8 =
2. 2.12 × 15 =
3. 3.5% of 650 =
4. 4.Check with nines: 238 + 937 = 1175. Correct or wrong? (a) correct (b) wrong
5. 5.170 + 47 =
6. 6.578 − 28 =
7. 7.18 × 18 =
8. 8.109 − 87 =
9. 9.330 − 36 =
10. 10.5% of 650 =
11. 11.Best estimate of 78 × 31? (a) 4800 (b) 2400 (c) 24000 (d) 240
12. 12.76 + 67 =
13. 13.29² =
14. 14.41 × 50 =
15. 15.₹76.35 + ₹41.95 =
16. 16.382 + 78 =
17. 17.Check with nines: 308 + 261 = 571. Correct or wrong? (a) correct (b) wrong
18. 18.306 + 49 =
19. 19.Check with nines: 98 × 12 = 1180. Correct or wrong? (a) wrong (b) correct
20. 20.₹71.90 − ₹32.30 =
21. 21.31 × 15 =
22. 22.114 + 38 =
23. 23.13 × 4 =
24. 24.2 + 1 + 7 + 8 =
25. 25.22 × 5 =
26. 26.11 × 19 =
27. 27.358 − 16 =
28. 28.88 + 17 + 43 + 34 =
29. 29.3 + 8 + 6 + 4 =
30. 30.Best estimate of 81 × 69? (a) 11200 (b) 5600 (c) 560 (d) 56000
31. 31.15% of 150 =
32. 32.8 + 1 + 9 + 9 =
33. 33.Best estimate of 59 × 82? (a) 48000 (b) 480 (c) 9600 (d) 4800
34. 34.10 × 15 =
35. 35.₹89.30 − ₹33.50 =
36. 36.170 + 37 =
37. 37.290 + 37 =
38. 38.20 + 48 + 14 + 59 =
39. 39.34 + 79 + 46 + 80 =
40. 40.Best estimate of 898 × 6? (a) 5400 (b) 54000 (c) 10800 (d) 540

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