Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 851 · 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.₹11.40 + ₹8.25 =
2. 2.11 × 19 =
3. 3.500 ÷ 5 =
4. 4.174 + 47 =
5. 5.307 − 27 =
6. 6.Best estimate of 102 × 6? (a) 600 (b) 1200 (c) 6000 (d) 60
7. 7.Best estimate of 92 × 49? (a) 45000 (b) 4500 (c) 9000 (d) 450
8. 8.256 + 37 =
9. 9.18 × 19 =
10. 10.875 ÷ 25 =
11. 11.39² =
12. 12.Best estimate of 901 × 6? (a) 540 (b) 5400 (c) 54000 (d) 10800
13. 13.₹86.50 + ₹38.10 =
14. 14.12 × 18 =
15. 15.6 + 4 + 8 + 5 + 9 =
16. 16.30 + 74 + 38 + 34 =
17. 17.13 × 15 =
18. 18.40 × 8 =
19. 19.64 + 36 + 28 + 78 =
20. 20.44 + 71 + 82 + 78 =
21. 21.60 × 15 =
22. 22.138 × 4 =
23. 23.52 × 15 =
24. 24.71 × 4 =
25. 25.5 + 4 + 4 + 1 + 6 =
26. 26.39² =
27. 27.955 ÷ 5 =
28. 28.Best estimate of 18 × 78? (a) 160 (b) 1600 (c) 3200 (d) 16000
29. 29.Check with nines: 27 × 77 = 2079. Correct or wrong? (a) wrong (b) correct
30. 30.11 × 19 =
31. 31.Best estimate of 402 × 3? (a) 2400 (b) 120 (c) 1200 (d) 12000
32. 32.15 × 15 =
33. 33.48 + 37 + 48 + 37 =
34. 34.50% of 660 =
35. 35.₹33.30 + ₹2.75 =
36. 36.57 × 15 =
37. 37.12 × 15 =
38. 38.26 + 83 + 57 + 56 =
39. 39.405 + 69 =
40. 40.Best estimate of 503 × 4? (a) 20000 (b) 200 (c) 4000 (d) 2000

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