Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 856 · 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 61 × 41? (a) 4800 (b) 2400 (c) 240 (d) 24000
2. 2.Check with nines: 96 × 50 = 4802. Correct or wrong? (a) wrong (b) correct
3. 3.111 × 4 =
4. 4.71 × 50 =
5. 5.15% of 630 =
6. 6.₹87.30 + ₹14.65 =
7. 7.1225 ÷ 25 =
8. 8.301 − 47 =
9. 9.Check with nines: 87 × 93 = 8091. Correct or wrong? (a) correct (b) wrong
10. 10.12 × 16 =
11. 11.278 + 67 =
12. 12.26 + 19 + 54 + 44 =
13. 13.37 × 50 =
14. 14.Check with nines: 32 × 68 = 2171. Correct or wrong? (a) correct (b) wrong
15. 15.250 ÷ 25 =
16. 16.73 × 50 =
17. 17.40 × 15 =
18. 18.30 + 76 + 81 + 59 =
19. 19.71² =
20. 20.18 × 8 =
21. 21.₹48.25 − ₹41.90 =
22. 22.102 × 4 =
23. 23.940 ÷ 5 =
24. 24.97 × 5 =
25. 25.71² =
26. 26.5% of 370 =
27. 27.12 × 18 =
28. 28.223 − 88 =
29. 29.5 + 7 + 9 + 9 + 3 =
30. 30.14 × 5 =
31. 31.21 × 8 =
32. 32.Best estimate of 62 × 78? (a) 9600 (b) 480 (c) 4800 (d) 48000
33. 33.₹7.35 + ₹25.30 =
34. 34.3 + 3 + 1 + 4 + 9 =
35. 35.14 × 17 =
36. 36.332 + 89 =
37. 37.₹30.10 + ₹24.60 =
38. 38.8 + 7 + 3 + 2 + 8 =
39. 39.127 × 4 =
40. 40.573 − 69 =

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