Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 441 · 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. 1.58 × 15 =
2. 2.60 × 15 =
3. 3.₹25.05 + ₹2.35 =
4. 4.22 × 15 =
5. 5.Best estimate of 803 × 9? (a) 720 (b) 72000 (c) 14400 (d) 7200
6. 6.7 + 7 + 3 + 1 + 2 =
7. 7.69² =
8. 8.49 × 8 =
9. 9.37 + 18 =
10. 10.Check with nines: 37 × 35 = 1295. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 25 × 66 = 1653. Correct or wrong? (a) wrong (b) correct
12. 12.62 × 15 =
13. 13.5 + 9 + 6 + 4 =
14. 14.129 × 4 =
15. 15.87 + 89 =
16. 16.Best estimate of 38 × 88? (a) 7200 (b) 3600 (c) 36000 (d) 360
17. 17.350 ÷ 50 =
18. 18.₹26.15 + ₹45.45 =
19. 19.5 + 5 + 3 + 5 + 3 =
20. 20.45 + 58 =
21. 21.69 + 34 + 27 + 21 =
22. 22.₹75.30 + ₹3.35 =
23. 23.625 ÷ 25 =
24. 24.₹77.45 − ₹20.10 =
25. 25.19 × 12 =
26. 26.2 + 4 + 8 + 3 + 4 =
27. 27.Best estimate of 97 × 8? (a) 1600 (b) 80 (c) 800 (d) 8000
28. 28.5% of 220 =
29. 29.437 − 77 =
30. 30.Best estimate of 598 × 4? (a) 4800 (b) 24000 (c) 2400 (d) 240
31. 31.₹73.60 + ₹8.65 =
32. 32.Check with nines: 346 + 691 = 1040. Correct or wrong? (a) correct (b) wrong
33. 33.Best estimate of 399 × 5? (a) 4000 (b) 20000 (c) 2000 (d) 200
34. 34.591 − 17 =
35. 35.18 × 15 =
36. 36.19 × 19 =
37. 37.136 + 89 =
38. 38.51² =
39. 39.15 × 12 =
40. 40.Best estimate of 201 × 6? (a) 1200 (b) 12000 (c) 2400 (d) 120

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