Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 13 · 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.Best estimate of 498 × 3? (a) 15000 (b) 150 (c) 1500 (d) 3000
2. 2.63 + 27 + 89 + 42 =
3. 3.3 + 5 + 3 + 7 =
4. 4.45 × 15 =
5. 5.63 × 5 =
6. 6.950 ÷ 50 =
7. 7.43 + 74 + 21 + 58 =
8. 8.5 + 6 + 5 + 1 =
9. 9.Best estimate of 799 × 6? (a) 4800 (b) 480 (c) 48000 (d) 9600
10. 10.12 × 15 =
11. 11.26 × 8 =
12. 12.15% of 570 =
13. 13.198 − 36 =
14. 14.41² =
15. 15.60 × 5 =
16. 16.412 + 18 =
17. 17.₹91.15 + ₹25.50 =
18. 18.95 + 87 =
19. 19.81 × 5 =
20. 20.165 + 88 =
21. 21.345 ÷ 5 =
22. 22.61² =
23. 23.Check with nines: 34 × 56 = 1904. Correct or wrong? (a) wrong (b) correct
24. 24.9 + 9 + 1 + 5 + 1 =
25. 25.4 + 6 + 9 + 9 + 9 =
26. 26.65 × 8 =
27. 27.50 × 15 =
28. 28.310 − 27 =
29. 29.₹14.20 − ₹13.95 =
30. 30.₹26.30 − ₹22.90 =
31. 31.Check with nines: 356 + 377 = 733. Correct or wrong? (a) correct (b) wrong
32. 32.573 − 78 =
33. 33.88 + 33 + 46 + 46 =
34. 34.Best estimate of 898 × 5? (a) 450 (b) 4500 (c) 45000 (d) 9000
35. 35.15% of 230 =
36. 36.47 + 50 + 15 + 33 =
37. 37.₹65.75 + ₹21.65 =
38. 38.1250 ÷ 25 =
39. 39.61² =
40. 40.13 × 15 =

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