Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 671 · 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. 1.49 + 69 =
2. 2.21² =
3. 3.479 + 18 =
4. 4.85 × 4 =
5. 5.₹91.40 − ₹23.20 =
6. 6.49 + 14 + 32 + 54 =
7. 7.Best estimate of 503 × 8? (a) 4000 (b) 40000 (c) 400 (d) 8000
8. 8.48 × 15 =
9. 9.₹21.30 + ₹26.50 =
10. 10.Check with nines: 312 + 572 = 884. Correct or wrong? (a) correct (b) wrong
11. 11.65 + 39 + 22 + 75 =
12. 12.21² =
13. 13.60 + 87 + 13 + 62 =
14. 14.770 ÷ 5 =
15. 15.29 × 15 =
16. 16.15% of 400 =
17. 17.334 − 97 =
18. 18.49 × 8 =
19. 19.Best estimate of 79 × 52? (a) 8000 (b) 400 (c) 40000 (d) 4000
20. 20.350 ÷ 25 =
21. 21.41² =
22. 22.16 + 29 + 57 + 75 =
23. 23.2 + 5 + 6 + 4 =
24. 24.25% of 670 =
25. 25.56 + 23 + 13 + 53 =
26. 26.374 − 59 =
27. 27.16 × 11 =
28. 28.59² =
29. 29.28 × 15 =
30. 30.18 × 8 =
31. 31.Best estimate of 299 × 3? (a) 1800 (b) 900 (c) 9000 (d) 90
32. 32.303 − 19 =
33. 33.19 × 8 =
34. 34.26 × 15 =
35. 35.583 − 39 =
36. 36.5% of 90 =
37. 37.₹67.30 − ₹49.25 =
38. 38.91 × 5 =
39. 39.465 + 17 =
40. 40.1 + 6 + 4 + 4 + 2 =

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