Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 85 · 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.Check with nines: 24 × 85 = 2040. Correct or wrong? (a) correct (b) wrong
2. 2.365 + 87 =
3. 3.Best estimate of 899 × 3? (a) 27000 (b) 2700 (c) 270 (d) 5400
4. 4.12 × 15 =
5. 5.8 + 1 + 2 + 7 + 3 =
6. 6.₹69.50 + ₹29.85 =
7. 7.39² =
8. 8.₹73.25 + ₹21.90 =
9. 9.49² =
10. 10.13 × 19 =
11. 11.44 + 36 + 52 + 88 =
12. 12.4 + 1 + 8 + 2 =
13. 13.54 + 14 + 42 + 66 =
14. 14.57 × 15 =
15. 15.32 + 21 + 13 + 44 =
16. 16.595 − 37 =
17. 17.Check with nines: 447 + 256 = 708. Correct or wrong? (a) correct (b) wrong
18. 18.Best estimate of 68 × 19? (a) 2800 (b) 140 (c) 14000 (d) 1400
19. 19.102 + 29 =
20. 20.48 × 15 =
21. 21.Best estimate of 798 × 9? (a) 720 (b) 72000 (c) 14400 (d) 7200
22. 22.Check with nines: 69 × 46 = 3174. Correct or wrong? (a) correct (b) wrong
23. 23.333 + 48 =
24. 24.49² =
25. 25.23 + 82 + 64 + 47 =
26. 26.28 × 15 =
27. 27.29² =
28. 28.6 + 4 + 7 + 1 + 9 =
29. 29.1 + 9 + 9 + 2 + 1 =
30. 30.840 ÷ 5 =
31. 31.165 − 36 =
32. 32.Best estimate of 49 × 18? (a) 10000 (b) 1000 (c) 2000 (d) 100
33. 33.37 × 15 =
34. 34.40 + 68 =
35. 35.89² =
36. 36.10% of 300 =
37. 37.559 − 57 =
38. 38.₹34.25 − ₹3.05 =
39. 39.45 × 4 =
40. 40.12 × 12 =

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