Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 380 · 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. 1.495 − 36 =
2. 2.Check with nines: 64 × 30 = 1920. Correct or wrong? (a) correct (b) wrong
3. 3.90 × 50 =
4. 4.200 ÷ 50 =
5. 5.Best estimate of 302 × 8? (a) 2400 (b) 4800 (c) 240 (d) 24000
6. 6.Best estimate of 68 × 62? (a) 4200 (b) 42000 (c) 8400 (d) 420
7. 7.Check with nines: 33 × 74 = 2438. Correct or wrong? (a) correct (b) wrong
8. 8.75 × 50 =
9. 9.Best estimate of 102 × 8? (a) 80 (b) 800 (c) 1600 (d) 8000
10. 10.39 × 4 =
11. 11.90 × 5 =
12. 12.₹39.80 + ₹13.05 =
13. 13.89² =
14. 14.12 × 12 =
15. 15.19 × 15 =
16. 16.28 + 23 + 19 + 20 =
17. 17.13 + 43 + 25 + 49 =
18. 18.20% of 200 =
19. 19.40 + 26 + 73 + 51 =
20. 20.37 + 57 =
21. 21.14 × 5 =
22. 22.440 + 77 =
23. 23.41 + 68 + 56 + 17 =
24. 24.100 ÷ 25 =
25. 25.25 × 15 =
26. 26.₹69.25 − ₹2.75 =
27. 27.23 × 5 =
28. 28.16 + 22 + 14 + 30 =
29. 29.446 + 47 =
30. 30.14 × 8 =
31. 31.410 − 36 =
32. 32.₹93.55 + ₹5.25 =
33. 33.158 − 28 =
34. 34.Best estimate of 48 × 92? (a) 4500 (b) 450 (c) 9000 (d) 45000
35. 35.Best estimate of 58 × 42? (a) 24000 (b) 4800 (c) 2400 (d) 240
36. 36.1025 ÷ 25 =
37. 37.12 × 16 =
38. 38.30 + 69 =
39. 39.5% of 30 =
40. 40.44 × 15 =

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