Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 208 · 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. 1.494 + 27 =
2. 2.62 × 15 =
3. 3.89² =
4. 4.2 + 8 + 1 + 2 + 8 =
5. 5.71 × 5 =
6. 6.5% of 160 =
7. 7.37 × 15 =
8. 8.35 × 4 =
9. 9.69 × 5 =
10. 10.15 × 15 =
11. 11.29 × 5 =
12. 12.Best estimate of 71 × 78? (a) 560 (b) 56000 (c) 11200 (d) 5600
13. 13.79 − 16 =
14. 14.Check with nines: 309 + 466 = 775. Correct or wrong? (a) correct (b) wrong
15. 15.₹64.30 + ₹43.35 =
16. 16.Best estimate of 28 × 41? (a) 12000 (b) 120 (c) 1200 (d) 2400
17. 17.₹54.45 + ₹19.65 =
18. 18.72 + 32 + 11 + 84 =
19. 19.14 × 11 =
20. 20.Check with nines: 17 × 32 = 548. Correct or wrong? (a) correct (b) wrong
21. 21.232 − 98 =
22. 22.2 + 4 + 6 + 9 =
23. 23.513 − 29 =
24. 24.149 × 4 =
25. 25.195 + 58 =
26. 26.5% of 890 =
27. 27.Check with nines: 38 × 54 = 2053. Correct or wrong? (a) correct (b) wrong
28. 28.71² =
29. 29.3 + 6 + 9 + 1 =
30. 30.Check with nines: 14 × 62 = 865. Correct or wrong? (a) wrong (b) correct
31. 31.71² =
32. 32.50% of 560 =
33. 33.35 × 8 =
34. 34.39 + 31 + 63 + 73 =
35. 35.39 × 15 =
36. 36.29 × 8 =
37. 37.1 + 1 + 9 + 7 =
38. 38.355 ÷ 5 =
39. 39.2 + 3 + 4 + 7 =
40. 40.Check with nines: 67 × 58 = 3883. Correct or wrong? (a) wrong (b) correct

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