Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 674 · 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. 1.7 + 2 + 7 + 3 =
2. 2.Check with nines: 38 × 69 = 2622. Correct or wrong? (a) correct (b) wrong
3. 3.66 × 50 =
4. 4.91 × 50 =
5. 5.18 × 13 =
6. 6.20% of 450 =
7. 7.16 × 8 =
8. 8.Best estimate of 61 × 51? (a) 300 (b) 30000 (c) 6000 (d) 3000
9. 9.47 × 50 =
10. 10.135 + 49 =
11. 11.11 × 12 =
12. 12.365 + 27 =
13. 13.193 − 28 =
14. 14.Best estimate of 78 × 61? (a) 480 (b) 4800 (c) 48000 (d) 9600
15. 15.5% of 300 =
16. 16.Best estimate of 297 × 8? (a) 4800 (b) 2400 (c) 24000 (d) 240
17. 17.81 + 37 + 15 + 89 =
18. 18.47 + 38 =
19. 19.7 + 3 + 7 + 2 =
20. 20.Check with nines: 530 + 620 = 1148. Correct or wrong? (a) correct (b) wrong
21. 21.1 + 2 + 9 + 7 =
22. 22.25% of 730 =
23. 23.142 − 87 =
24. 24.1325 ÷ 25 =
25. 25.211 − 79 =
26. 26.490 + 67 =
27. 27.359 + 17 =
28. 28.15% of 840 =
29. 29.114 − 39 =
30. 30.53 × 15 =
31. 31.19 × 15 =
32. 32.₹41.40 − ₹3.95 =
33. 33.124 − 78 =
34. 34.Check with nines: 26 × 68 = 1768. Correct or wrong? (a) correct (b) wrong
35. 35.10% of 760 =
36. 36.Best estimate of 402 × 4? (a) 16000 (b) 160 (c) 3200 (d) 1600
37. 37.5 + 5 + 3 + 4 + 5 =
38. 38.145 × 4 =
39. 39.109 + 39 =
40. 40.77 × 5 =

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