Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 815 · 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.₹79.35 − ₹34.40 =
2. 2.95 − 47 =
3. 3.Best estimate of 48 × 68? (a) 3500 (b) 350 (c) 35000 (d) 7000
4. 4.142 − 48 =
5. 5.479 − 97 =
6. 6.5% of 390 =
7. 7.29² =
8. 8.25% of 330 =
9. 9.2 + 9 + 8 + 8 =
10. 10.12 × 13 =
11. 11.Best estimate of 22 × 92? (a) 18000 (b) 1800 (c) 3600 (d) 180
12. 12.Check with nines: 45 × 73 = 3292. Correct or wrong? (a) correct (b) wrong
13. 13.22 × 50 =
14. 14.15 × 13 =
15. 15.16 × 17 =
16. 16.44 × 15 =
17. 17.5 + 1 + 5 + 6 + 4 =
18. 18.₹40.30 + ₹9.35 =
19. 19.7 + 2 + 5 + 6 + 8 =
20. 20.496 − 69 =
21. 21.₹29.20 − ₹10.55 =
22. 22.97 × 5 =
23. 23.Check with nines: 390 + 467 = 854. Correct or wrong? (a) correct (b) wrong
24. 24.228 + 78 =
25. 25.13 + 59 + 80 + 46 =
26. 26.₹34.15 − ₹6.10 =
27. 27.372 − 58 =
28. 28.211 − 77 =
29. 29.31² =
30. 30.441 + 47 =
31. 31.8 + 5 + 5 + 9 =
32. 32.15 × 12 =
33. 33.112 × 4 =
34. 34.588 − 39 =
35. 35.Check with nines: 560 + 547 = 1108. Correct or wrong? (a) wrong (b) correct
36. 36.39 × 8 =
37. 37.55 × 15 =
38. 38.17 × 17 =
39. 39.₹99.50 − ₹7.10 =
40. 40.₹48.40 + ₹18.10 =

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