Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 299 · 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. 1.79² =
2. 2.15 × 19 =
3. 3.12 × 13 =
4. 4.19 + 40 + 89 + 71 =
5. 5.370 + 97 =
6. 6.35 + 65 + 39 + 51 =
7. 7.Check with nines: 414 + 586 = 999. Correct or wrong? (a) wrong (b) correct
8. 8.21² =
9. 9.61² =
10. 10.339 − 98 =
11. 11.39² =
12. 12.Best estimate of 497 × 4? (a) 20000 (b) 2000 (c) 4000 (d) 200
13. 13.Check with nines: 79 × 73 = 5767. Correct or wrong? (a) correct (b) wrong
14. 14.6 + 6 + 6 + 4 =
15. 15.520 ÷ 5 =
16. 16.29² =
17. 17.12 × 8 =
18. 18.235 − 76 =
19. 19.Best estimate of 58 × 19? (a) 120 (b) 2400 (c) 1200 (d) 12000
20. 20.54 × 5 =
21. 21.53 + 16 + 28 + 22 =
22. 22.59 − 29 =
23. 23.37 + 79 + 22 + 58 =
24. 24.64 + 60 + 13 + 61 =
25. 25.126 × 4 =
26. 26.6 + 4 + 3 + 2 =
27. 27.1 + 8 + 4 + 6 + 8 =
28. 28.₹78.10 + ₹20.70 =
29. 29.365 + 19 =
30. 30.361 − 78 =
31. 31.13 × 16 =
32. 32.18 × 8 =
33. 33.Check with nines: 82 × 59 = 4838. Correct or wrong? (a) correct (b) wrong
34. 34.62 × 15 =
35. 35.212 − 59 =
36. 36.61² =
37. 37.1% of 180 =
38. 38.Check with nines: 458 + 263 = 721. Correct or wrong? (a) wrong (b) correct
39. 39.39 + 77 + 58 + 43 =
40. 40.₹96.40 + ₹25.90 =

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