Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 748 · 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. 1.62 × 15 =
2. 2.Check with nines: 24 × 98 = 2352. Correct or wrong? (a) wrong (b) correct
3. 3.₹95.10 − ₹36.45 =
4. 4.10% of 870 =
5. 5.25% of 160 =
6. 6.₹43.60 − ₹33.20 =
7. 7.15 × 18 =
8. 8.Best estimate of 397 × 4? (a) 1600 (b) 16000 (c) 160 (d) 3200
9. 9.48 × 5 =
10. 10.15 × 17 =
11. 11.14 × 50 =
12. 12.51² =
13. 13.53 + 42 + 49 + 30 =
14. 14.Best estimate of 899 × 8? (a) 7200 (b) 72000 (c) 14400 (d) 720
15. 15.Check with nines: 38 × 61 = 2316. Correct or wrong? (a) wrong (b) correct
16. 16.59² =
17. 17.₹22.30 + ₹3.70 =
18. 18.₹42.05 + ₹6.40 =
19. 19.12 + 22 + 66 + 21 =
20. 20.₹99.50 + ₹29.60 =
21. 21.Check with nines: 484 + 770 = 1254. Correct or wrong? (a) wrong (b) correct
22. 22.29² =
23. 23.53 × 8 =
24. 24.8 + 5 + 5 + 4 =
25. 25.475 ÷ 5 =
26. 26.13 + 58 + 55 + 34 =
27. 27.400 ÷ 50 =
28. 28.1% of 260 =
29. 29.9 + 3 + 7 + 6 =
30. 30.156 × 4 =
31. 31.64 × 5 =
32. 32.5 + 1 + 7 + 4 + 3 =
33. 33.10% of 540 =
34. 34.₹54.60 − ₹22.70 =
35. 35.50% of 290 =
36. 36.Check with nines: 99 × 70 = 6930. Correct or wrong? (a) correct (b) wrong
37. 37.63 + 24 + 62 + 73 =
38. 38.Check with nines: 896 + 394 = 1290. Correct or wrong? (a) wrong (b) correct
39. 39.71² =
40. 40.Check with nines: 519 + 816 = 1338. Correct or wrong? (a) wrong (b) correct

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