Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 162 · 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. 1.48 × 15 =
2. 2.394 − 88 =
3. 3.56 + 59 + 41 + 32 =
4. 4.337 + 27 =
5. 5.26 + 69 + 67 + 54 =
6. 6.37 + 57 =
7. 7.172 − 79 =
8. 8.335 + 67 =
9. 9.267 + 38 =
10. 10.Best estimate of 18 × 41? (a) 8000 (b) 80 (c) 1600 (d) 800
11. 11.225 − 19 =
12. 12.2 + 3 + 7 + 2 + 1 =
13. 13.₹92.90 − ₹5.20 =
14. 14.450 ÷ 25 =
15. 15.Best estimate of 298 × 4? (a) 1200 (b) 12000 (c) 2400 (d) 120
16. 16.29² =
17. 17.Check with nines: 371 + 830 = 1201. Correct or wrong? (a) correct (b) wrong
18. 18.117 − 86 =
19. 19.86 + 27 =
20. 20.Best estimate of 21 × 81? (a) 3200 (b) 1600 (c) 16000 (d) 160
21. 21.₹78.55 + ₹49.25 =
22. 22.61 × 5 =
23. 23.21² =
24. 24.835 ÷ 5 =
25. 25.55 + 69 =
26. 26.9 + 8 + 3 + 1 + 8 =
27. 27.150 ÷ 5 =
28. 28.2 + 9 + 1 + 9 =
29. 29.43 × 4 =
30. 30.91 × 50 =
31. 31.Best estimate of 797 × 4? (a) 3200 (b) 6400 (c) 32000 (d) 320
32. 32.390 + 79 =
33. 33.61² =
34. 34.81² =
35. 35.17 × 11 =
36. 36.282 + 87 =
37. 37.Best estimate of 697 × 3? (a) 4200 (b) 21000 (c) 210 (d) 2100
38. 38.1% of 530 =
39. 39.45 + 43 + 78 + 18 =
40. 40.1475 ÷ 25 =

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