Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 477 · 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. 1.87 + 22 + 53 + 55 =
2. 2.20% of 360 =
3. 3.51 + 50 + 72 + 28 =
4. 4.17 × 5 =
5. 5.466 − 28 =
6. 6.₹36.45 + ₹42.15 =
7. 7.78 + 66 + 87 + 83 =
8. 8.Check with nines: 994 + 168 = 1162. Correct or wrong? (a) correct (b) wrong
9. 9.850 ÷ 25 =
10. 10.46 + 69 + 65 + 51 =
11. 11.15 × 17 =
12. 12.527 − 88 =
13. 13.50 + 28 + 89 + 83 =
14. 14.₹85.70 − ₹36.70 =
15. 15.Check with nines: 20 × 99 = 1980. Correct or wrong? (a) correct (b) wrong
16. 16.21 × 50 =
17. 17.Best estimate of 101 × 4? (a) 400 (b) 4000 (c) 40 (d) 800
18. 18.2 + 6 + 7 + 4 =
19. 19.Check with nines: 42 × 15 = 630. Correct or wrong? (a) correct (b) wrong
20. 20.339 + 48 =
21. 21.19² =
22. 22.297 − 88 =
23. 23.36 + 29 + 55 + 15 =
24. 24.12 × 14 =
25. 25.1375 ÷ 25 =
26. 26.9 + 6 + 2 + 4 =
27. 27.₹8.85 − ₹5.45 =
28. 28.Best estimate of 101 × 6? (a) 1200 (b) 6000 (c) 60 (d) 600
29. 29.30 × 50 =
30. 30.49² =
31. 31.12 × 12 =
32. 32.19² =
33. 33.₹44.45 − ₹12.70 =
34. 34.333 + 89 =
35. 35.12 × 12 =
36. 36.19 × 15 =
37. 37.₹41.05 + ₹39.90 =
38. 38.481 − 39 =
39. 39.Best estimate of 21 × 61? (a) 120 (b) 2400 (c) 12000 (d) 1200
40. 40.₹24.35 − ₹2.10 =

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