Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 157 · 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.Check with nines: 49 × 48 = 2356. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 68 × 34 = 2304. Correct or wrong? (a) wrong (b) correct
3. 3.71² =
4. 4.46 × 15 =
5. 5.79² =
6. 6.297 − 77 =
7. 7.169 − 98 =
8. 8.25% of 600 =
9. 9.Check with nines: 80 × 27 = 2167. Correct or wrong? (a) correct (b) wrong
10. 10.63 + 68 =
11. 11.37 × 15 =
12. 12.28 × 15 =
13. 13.950 ÷ 50 =
14. 14.19² =
15. 15.Best estimate of 303 × 6? (a) 3600 (b) 180 (c) 18000 (d) 1800
16. 16.11 × 19 =
17. 17.29² =
18. 18.Best estimate of 61 × 92? (a) 540 (b) 10800 (c) 54000 (d) 5400
19. 19.7 + 2 + 6 + 8 =
20. 20.700 ÷ 50 =
21. 21.30 × 8 =
22. 22.16 × 15 =
23. 23.18 × 13 =
24. 24.53 + 27 + 45 + 51 =
25. 25.63 + 20 + 64 + 11 =
26. 26.5 + 1 + 2 + 8 + 8 =
27. 27.61 + 24 + 74 + 17 =
28. 28.21 + 12 + 31 + 77 =
29. 29.75 × 5 =
30. 30.7 + 7 + 9 + 1 + 1 =
31. 31.220 + 57 =
32. 32.400 − 87 =
33. 33.41² =
34. 34.₹58.15 + ₹27.50 =
35. 35.115 − 28 =
36. 36.17 × 50 =
37. 37.₹52.10 + ₹41.95 =
38. 38.Check with nines: 92 × 52 = 4787. Correct or wrong? (a) wrong (b) correct
39. 39.10% of 280 =
40. 40.13 × 5 =

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