Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 621 · 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. 1.5% of 800 =
2. 2.Check with nines: 91 × 97 = 8827. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 22 × 34 = 748. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 717 + 695 = 1412. Correct or wrong? (a) wrong (b) correct
5. 5.1150 ÷ 50 =
6. 6.11 × 15 =
7. 7.1% of 520 =
8. 8.147 − 86 =
9. 9.220 + 89 =
10. 10.18 × 5 =
11. 11.20% of 230 =
12. 12.Best estimate of 22 × 38? (a) 1600 (b) 80 (c) 800 (d) 8000
13. 13.₹78.20 + ₹38.30 =
14. 14.1100 ÷ 50 =
15. 15.51 + 12 + 18 + 12 =
16. 16.₹43.80 + ₹43.30 =
17. 17.2 + 8 + 8 + 9 =
18. 18.157 + 28 =
19. 19.224 − 48 =
20. 20.14 × 16 =
21. 21.14 × 14 =
22. 22.54 × 5 =
23. 23.Check with nines: 874 + 600 = 1473. Correct or wrong? (a) correct (b) wrong
24. 24.22 × 8 =
25. 25.Best estimate of 398 × 9? (a) 36000 (b) 7200 (c) 360 (d) 3600
26. 26.86 × 5 =
27. 27.59 × 4 =
28. 28.49² =
29. 29.15% of 680 =
30. 30.60 × 15 =
31. 31.433 + 78 =
32. 32.₹44.25 − ₹9.45 =
33. 33.Check with nines: 59 × 47 = 2769. Correct or wrong? (a) wrong (b) correct
34. 34.11 × 11 =
35. 35.14 × 5 =
36. 36.11 × 17 =
37. 37.8 × 15 =
38. 38.9 + 1 + 4 + 4 + 9 =
39. 39.Check with nines: 454 + 771 = 1225. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 54 × 21 = 1134. Correct or wrong? (a) wrong (b) correct

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