Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 168 · 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. 1.42 + 45 + 46 + 22 =
2. 2.Best estimate of 29 × 38? (a) 2400 (b) 120 (c) 12000 (d) 1200
3. 3.₹82.20 − ₹19.65 =
4. 4.Best estimate of 39 × 62? (a) 4800 (b) 24000 (c) 2400 (d) 240
5. 5.Best estimate of 19 × 19? (a) 4000 (b) 400 (c) 800 (d) 40
6. 6.55 × 4 =
7. 7.Best estimate of 497 × 7? (a) 350 (b) 7000 (c) 35000 (d) 3500
8. 8.91 × 5 =
9. 9.79 × 5 =
10. 10.174 − 96 =
11. 11.29² =
12. 12.Best estimate of 81 × 48? (a) 40000 (b) 4000 (c) 400 (d) 8000
13. 13.31² =
14. 14.263 + 38 =
15. 15.15 × 15 =
16. 16.167 + 89 =
17. 17.11 + 34 + 28 + 75 =
18. 18.76 + 20 + 45 + 15 =
19. 19.82 × 50 =
20. 20.45 × 15 =
21. 21.500 ÷ 25 =
22. 22.Check with nines: 344 + 316 = 660. Correct or wrong? (a) correct (b) wrong
23. 23.₹57.20 + ₹28.35 =
24. 24.₹95.90 + ₹41.20 =
25. 25.27 + 68 + 70 + 60 =
26. 26.15% of 180 =
27. 27.25 × 15 =
28. 28.79² =
29. 29.66 + 49 =
30. 30.1 + 9 + 5 + 2 =
31. 31.7 + 8 + 8 + 3 + 2 =
32. 32.194 + 88 =
33. 33.272 + 68 =
34. 34.59² =
35. 35.80 + 12 + 17 + 64 =
36. 36.Best estimate of 31 × 79? (a) 24000 (b) 240 (c) 4800 (d) 2400
37. 37.350 ÷ 50 =
38. 38.9 + 5 + 5 + 5 =
39. 39.206 − 87 =
40. 40.₹74.20 − ₹13.95 =

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