Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 33 · 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.Best estimate of 297 × 6? (a) 1800 (b) 3600 (c) 180 (d) 18000
2. 2.600 ÷ 50 =
3. 3.590 − 19 =
4. 4.153 + 67 =
5. 5.Best estimate of 29 × 32? (a) 9000 (b) 900 (c) 1800 (d) 90
6. 6.Best estimate of 599 × 4? (a) 240 (b) 2400 (c) 24000 (d) 4800
7. 7.251 − 16 =
8. 8.120 + 39 =
9. 9.₹72.75 − ₹15.10 =
10. 10.27 × 50 =
11. 11.Best estimate of 298 × 4? (a) 120 (b) 12000 (c) 2400 (d) 1200
12. 12.₹69.65 + ₹46.15 =
13. 13.9 + 1 + 8 + 2 =
14. 14.Best estimate of 52 × 89? (a) 4500 (b) 450 (c) 9000 (d) 45000
15. 15.51² =
16. 16.Check with nines: 12 × 66 = 792. Correct or wrong? (a) wrong (b) correct
17. 17.112 × 4 =
18. 18.7 + 7 + 7 + 3 + 8 =
19. 19.9 + 5 + 1 + 1 =
20. 20.84 − 28 =
21. 21.9 + 1 + 2 + 5 =
22. 22.1% of 50 =
23. 23.389 − 89 =
24. 24.Best estimate of 97 × 4? (a) 400 (b) 800 (c) 4000 (d) 40
25. 25.Check with nines: 53 × 18 = 954. Correct or wrong? (a) wrong (b) correct
26. 26.Best estimate of 598 × 5? (a) 300 (b) 30000 (c) 6000 (d) 3000
27. 27.15% of 810 =
28. 28.203 + 97 =
29. 29.79² =
30. 30.340 + 69 =
31. 31.1250 ÷ 50 =
32. 32.Best estimate of 49 × 29? (a) 150 (b) 3000 (c) 15000 (d) 1500
33. 33.5 + 3 + 5 + 5 =
34. 34.15 × 8 =
35. 35.₹88.40 + ₹33.10 =
36. 36.19 × 12 =
37. 37.9 + 1 + 1 + 3 + 7 =
38. 38.576 − 27 =
39. 39.₹17.15 − ₹15.60 =
40. 40.Best estimate of 28 × 79? (a) 4800 (b) 240 (c) 2400 (d) 24000

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