Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 360 · 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.₹20.35 + ₹43.95 =
3. 3.56 + 82 + 84 + 75 =
4. 4.88 + 67 + 88 + 49 =
5. 5.Check with nines: 96 × 52 = 4989. Correct or wrong? (a) correct (b) wrong
6. 6.16 × 8 =
7. 7.Check with nines: 931 + 567 = 1506. Correct or wrong? (a) correct (b) wrong
8. 8.1 + 8 + 3 + 3 + 2 =
9. 9.Best estimate of 31 × 31? (a) 900 (b) 9000 (c) 1800 (d) 90
10. 10.15 × 5 =
11. 11.8 × 15 =
12. 12.Check with nines: 64 × 34 = 2176. Correct or wrong? (a) wrong (b) correct
13. 13.185 ÷ 5 =
14. 14.97 × 50 =
15. 15.51² =
16. 16.Check with nines: 49 × 26 = 1274. Correct or wrong? (a) correct (b) wrong
17. 17.Best estimate of 59 × 22? (a) 120 (b) 1200 (c) 12000 (d) 2400
18. 18.₹97.30 − ₹6.25 =
19. 19.81 × 4 =
20. 20.96 × 5 =
21. 21.20% of 100 =
22. 22.900 ÷ 25 =
23. 23.₹43.50 + ₹38.05 =
24. 24.18 × 17 =
25. 25.22 × 5 =
26. 26.650 ÷ 25 =
27. 27.16 × 17 =
28. 28.144 + 48 =
29. 29.41² =
30. 30.488 − 86 =
31. 31.369 + 59 =
32. 32.Best estimate of 61 × 29? (a) 18000 (b) 3600 (c) 180 (d) 1800
33. 33.15% of 90 =
34. 34.Check with nines: 120 + 238 = 366. Correct or wrong? (a) wrong (b) correct
35. 35.30 × 4 =
36. 36.11 × 15 =
37. 37.62 × 50 =
38. 38.18 + 62 + 66 + 45 =
39. 39.329 − 19 =
40. 40.8 + 6 + 2 + 8 =

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