Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 524 · 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. 1.391 + 79 =
2. 2.31 + 67 + 17 + 65 =
3. 3.21 + 72 + 66 + 50 =
4. 4.29 + 68 =
5. 5.77 × 50 =
6. 6.Best estimate of 397 × 6? (a) 240 (b) 24000 (c) 2400 (d) 4800
7. 7.89² =
8. 8.180 ÷ 5 =
9. 9.₹91.10 − ₹14.90 =
10. 10.₹90.40 + ₹2.05 =
11. 11.Check with nines: 514 + 308 = 815. Correct or wrong? (a) wrong (b) correct
12. 12.31² =
13. 13.₹40.60 − ₹12.50 =
14. 14.₹32.30 − ₹18.15 =
15. 15.8 + 1 + 3 + 9 =
16. 16.103 − 19 =
17. 17.Check with nines: 29 × 62 = 1801. Correct or wrong? (a) wrong (b) correct
18. 18.296 − 17 =
19. 19.810 ÷ 5 =
20. 20.89² =
21. 21.69 + 20 + 18 + 17 =
22. 22.42 × 15 =
23. 23.1 + 3 + 5 + 7 =
24. 24.51² =
25. 25.43 × 15 =
26. 26.₹96.60 − ₹40.70 =
27. 27.₹16.20 − ₹10.05 =
28. 28.20% of 130 =
29. 29.15% of 720 =
30. 30.15 × 14 =
31. 31.538 − 78 =
32. 32.288 − 36 =
33. 33.41² =
34. 34.Check with nines: 736 + 700 = 1436. Correct or wrong? (a) wrong (b) correct
35. 35.192 + 79 =
36. 36.25% of 720 =
37. 37.Check with nines: 579 + 265 = 844. Correct or wrong? (a) wrong (b) correct
38. 38.5 + 5 + 6 + 1 =
39. 39.201 + 27 =
40. 40.59 + 82 + 74 + 79 =

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