Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 288 · 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. 1.19 × 13 =
2. 2.75 × 8 =
3. 3.187 − 56 =
4. 4.17 × 11 =
5. 5.87 × 5 =
6. 6.12 × 15 =
7. 7.18 × 12 =
8. 8.107 + 69 =
9. 9.76 + 39 + 70 + 82 =
10. 10.68 × 50 =
11. 11.48 × 50 =
12. 12.₹49.10 + ₹9.90 =
13. 13.83 × 5 =
14. 14.525 − 78 =
15. 15.71 + 19 + 43 + 20 =
16. 16.Best estimate of 21 × 72? (a) 1400 (b) 140 (c) 14000 (d) 2800
17. 17.33 + 24 + 36 + 16 =
18. 18.8 + 2 + 6 + 1 + 2 =
19. 19.Check with nines: 757 + 988 = 1747. Correct or wrong? (a) wrong (b) correct
20. 20.Best estimate of 51 × 31? (a) 150 (b) 15000 (c) 3000 (d) 1500
21. 21.25% of 470 =
22. 22.Check with nines: 863 + 510 = 1373. Correct or wrong? (a) correct (b) wrong
23. 23.180 − 56 =
24. 24.12 × 19 =
25. 25.11 + 14 + 34 + 37 =
26. 26.48 × 50 =
27. 27.Check with nines: 24 × 64 = 1536. Correct or wrong? (a) wrong (b) correct
28. 28.3 + 6 + 4 + 7 + 1 =
29. 29.Best estimate of 203 × 6? (a) 2400 (b) 1200 (c) 120 (d) 12000
30. 30.14 × 15 =
31. 31.59 × 5 =
32. 32.Best estimate of 203 × 3? (a) 6000 (b) 600 (c) 60 (d) 1200
33. 33.Best estimate of 297 × 8? (a) 240 (b) 4800 (c) 24000 (d) 2400
34. 34.550 ÷ 50 =
35. 35.475 + 99 =
36. 36.19² =
37. 37.Best estimate of 88 × 81? (a) 14400 (b) 72000 (c) 720 (d) 7200
38. 38.4 + 7 + 4 + 6 =
39. 39.₹22.60 + ₹3.75 =
40. 40.69 × 4 =

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