Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 711 · 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. 1.72 × 8 =
2. 2.36 + 88 + 31 + 48 =
3. 3.285 + 19 =
4. 4.126 + 38 =
5. 5.Best estimate of 402 × 6? (a) 4800 (b) 24000 (c) 240 (d) 2400
6. 6.20 × 50 =
7. 7.575 ÷ 25 =
8. 8.4 + 8 + 8 + 6 =
9. 9.Check with nines: 306 + 196 = 502. Correct or wrong? (a) wrong (b) correct
10. 10.49² =
11. 11.Best estimate of 99 × 3? (a) 30 (b) 600 (c) 3000 (d) 300
12. 12.8 + 5 + 4 + 5 + 2 =
13. 13.8 + 2 + 1 + 8 =
14. 14.18 × 15 =
15. 15.570 − 19 =
16. 16.310 − 38 =
17. 17.4 + 3 + 7 + 4 =
18. 18.2 + 7 + 8 + 3 =
19. 19.53 × 15 =
20. 20.5% of 830 =
21. 21.9 × 15 =
22. 22.479 − 69 =
23. 23.Best estimate of 71 × 78? (a) 560 (b) 5600 (c) 56000 (d) 11200
24. 24.Check with nines: 79 × 40 = 3157. Correct or wrong? (a) correct (b) wrong
25. 25.Best estimate of 201 × 3? (a) 1200 (b) 6000 (c) 600 (d) 60
26. 26.5 + 3 + 2 + 8 + 2 =
27. 27.18 × 13 =
28. 28.23 × 15 =
29. 29.15 × 14 =
30. 30.Best estimate of 697 × 4? (a) 2800 (b) 28000 (c) 5600 (d) 280
31. 31.15 × 12 =
32. 32.320 − 49 =
33. 33.434 + 17 =
34. 34.62 × 15 =
35. 35.Best estimate of 297 × 4? (a) 120 (b) 2400 (c) 12000 (d) 1200
36. 36.Best estimate of 498 × 4? (a) 2000 (b) 200 (c) 4000 (d) 20000
37. 37.62 × 8 =
38. 38.17 × 8 =
39. 39.₹83.55 − ₹17.45 =
40. 40.17 × 17 =

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