Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 535 · 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.Best estimate of 72 × 91? (a) 12600 (b) 630 (c) 6300 (d) 63000
2. 2.15 × 14 =
3. 3.140 × 4 =
4. 4.Check with nines: 65 × 75 = 4875. Correct or wrong? (a) correct (b) wrong
5. 5.69 + 69 =
6. 6.200 ÷ 25 =
7. 7.₹16.30 − ₹15.50 =
8. 8.73 × 8 =
9. 9.48 × 4 =
10. 10.Check with nines: 398 + 279 = 679. Correct or wrong? (a) correct (b) wrong
11. 11.5% of 530 =
12. 12.1 + 4 + 9 + 1 + 3 =
13. 13.Best estimate of 28 × 32? (a) 9000 (b) 1800 (c) 900 (d) 90
14. 14.63 × 5 =
15. 15.79² =
16. 16.16 × 50 =
17. 17.Check with nines: 90 × 87 = 7834. Correct or wrong? (a) correct (b) wrong
18. 18.Best estimate of 81 × 89? (a) 72000 (b) 14400 (c) 720 (d) 7200
19. 19.1550 ÷ 50 =
20. 20.16 × 15 =
21. 21.18 × 19 =
22. 22.19 × 50 =
23. 23.28 × 8 =
24. 24.548 − 48 =
25. 25.506 − 97 =
26. 26.19² =
27. 27.10% of 330 =
28. 28.59 × 15 =
29. 29.492 + 39 =
30. 30.675 ÷ 25 =
31. 31.5% of 170 =
32. 32.48 × 15 =
33. 33.37 × 15 =
34. 34.₹80.40 − ₹18.15 =
35. 35.451 + 38 =
36. 36.268 − 26 =
37. 37.Check with nines: 47 × 57 = 2683. Correct or wrong? (a) wrong (b) correct
38. 38.Best estimate of 29 × 89? (a) 2700 (b) 27000 (c) 5400 (d) 270
39. 39.56 × 15 =
40. 40.20 + 39 + 70 + 54 =

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