Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 335 · 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. 1.56 + 40 + 60 + 87 =
2. 2.70 × 50 =
3. 3.61² =
4. 4.121 − 17 =
5. 5.150 ÷ 50 =
6. 6.243 + 28 =
7. 7.257 − 26 =
8. 8.Check with nines: 93 × 99 = 9213. Correct or wrong? (a) correct (b) wrong
9. 9.30 × 5 =
10. 10.8 + 4 + 3 + 6 =
11. 11.37 × 4 =
12. 12.41² =
13. 13.56 + 37 =
14. 14.18 × 16 =
15. 15.333 + 37 =
16. 16.10% of 590 =
17. 17.Best estimate of 78 × 38? (a) 3200 (b) 32000 (c) 6400 (d) 320
18. 18.29² =
19. 19.Best estimate of 499 × 8? (a) 400 (b) 8000 (c) 4000 (d) 40000
20. 20.14 × 16 =
21. 21.93 + 27 =
22. 22.Check with nines: 910 + 465 = 1375. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 595 + 345 = 942. Correct or wrong? (a) correct (b) wrong
24. 24.₹17.70 + ₹42.85 =
25. 25.20 + 78 + 11 + 80 =
26. 26.2 + 6 + 8 + 1 + 9 =
27. 27.1 + 1 + 9 + 1 =
28. 28.82 + 56 + 26 + 64 =
29. 29.36 × 8 =
30. 30.133 × 4 =
31. 31.429 − 76 =
32. 32.362 − 66 =
33. 33.7 + 3 + 3 + 9 + 6 =
34. 34.785 ÷ 5 =
35. 35.Best estimate of 897 × 9? (a) 16200 (b) 81000 (c) 810 (d) 8100
36. 36.Best estimate of 29 × 51? (a) 3000 (b) 15000 (c) 150 (d) 1500
37. 37.Check with nines: 843 + 600 = 1443. Correct or wrong? (a) wrong (b) correct
38. 38.41² =
39. 39.52 + 75 + 55 + 79 =
40. 40.795 ÷ 5 =

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