Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 557 · 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. 1.15 × 18 =
2. 2.11 × 14 =
3. 3.8 + 2 + 7 + 4 =
4. 4.Best estimate of 898 × 7? (a) 630 (b) 63000 (c) 12600 (d) 6300
5. 5.Check with nines: 17 × 81 = 1369. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 717 + 264 = 981. Correct or wrong? (a) correct (b) wrong
7. 7.64 + 87 + 22 + 78 =
8. 8.19² =
9. 9.448 − 38 =
10. 10.213 − 37 =
11. 11.36 × 5 =
12. 12.118 − 27 =
13. 13.43 × 50 =
14. 14.116 × 4 =
15. 15.91² =
16. 16.7 × 15 =
17. 17.Check with nines: 44 × 56 = 2464. Correct or wrong? (a) wrong (b) correct
18. 18.1% of 60 =
19. 19.125 ÷ 5 =
20. 20.89 × 5 =
21. 21.₹61.85 + ₹46.20 =
22. 22.149 × 4 =
23. 23.16 + 38 + 30 + 12 =
24. 24.Check with nines: 97 × 87 = 8442. Correct or wrong? (a) correct (b) wrong
25. 25.32 × 4 =
26. 26.71² =
27. 27.Best estimate of 299 × 5? (a) 1500 (b) 3000 (c) 15000 (d) 150
28. 28.29 + 89 + 73 + 79 =
29. 29.14 × 15 =
30. 30.18 × 13 =
31. 31.₹30.30 − ₹15.15 =
32. 32.30 + 17 + 89 + 54 =
33. 33.17 × 17 =
34. 34.61² =
35. 35.66 × 8 =
36. 36.5% of 530 =
37. 37.482 + 87 =
38. 38.196 + 49 =
39. 39.155 − 16 =
40. 40.18 × 18 =

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