Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 459 · 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. 1.12 × 15 =
2. 2.Best estimate of 71 × 62? (a) 4200 (b) 42000 (c) 8400 (d) 420
3. 3.12 × 15 =
4. 4.16 × 12 =
5. 5.59² =
6. 6.341 + 38 =
7. 7.141 + 88 =
8. 8.59 + 44 + 82 + 61 =
9. 9.47 × 8 =
10. 10.Best estimate of 62 × 82? (a) 9600 (b) 480 (c) 48000 (d) 4800
11. 11.139 × 4 =
12. 12.31² =
13. 13.1050 ÷ 25 =
14. 14.18 + 21 + 20 + 20 =
15. 15.510 − 69 =
16. 16.501 − 48 =
17. 17.69² =
18. 18.12 × 15 =
19. 19.₹46.15 − ₹41.10 =
20. 20.3 + 2 + 2 + 2 + 8 =
21. 21.39 × 50 =
22. 22.15 × 15 =
23. 23.368 − 86 =
24. 24.1% of 560 =
25. 25.Best estimate of 197 × 7? (a) 14000 (b) 140 (c) 2800 (d) 1400
26. 26.Check with nines: 35 × 76 = 2659. Correct or wrong? (a) wrong (b) correct
27. 27.8 + 2 + 8 + 4 + 1 =
28. 28.14 × 11 =
29. 29.185 + 67 =
30. 30.Check with nines: 492 + 990 = 1482. Correct or wrong? (a) correct (b) wrong
31. 31.7 + 2 + 9 + 1 =
32. 32.66 + 54 + 87 + 40 =
33. 33.3 + 6 + 3 + 7 + 2 =
34. 34.₹26.90 + ₹49.20 =
35. 35.67 + 58 + 38 + 14 =
36. 36.346 − 17 =
37. 37.89² =
38. 38.69 × 8 =
39. 39.₹96.35 + ₹11.15 =
40. 40.20 × 8 =

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