Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 758 · 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. 1.65 × 8 =
2. 2.8 + 7 + 4 + 2 =
3. 3.9 × 15 =
4. 4.68 × 50 =
5. 5.190 + 58 =
6. 6.13 × 19 =
7. 7.₹45.30 − ₹8.15 =
8. 8.36 × 5 =
9. 9.6 + 8 + 2 + 8 + 5 =
10. 10.5 + 1 + 5 + 2 =
11. 11.₹13.80 + ₹24.35 =
12. 12.2 + 2 + 4 + 8 =
13. 13.Best estimate of 98 × 9? (a) 90 (b) 9000 (c) 1800 (d) 900
14. 14.64 + 23 + 65 + 70 =
15. 15.Check with nines: 161 + 214 = 380. Correct or wrong? (a) wrong (b) correct
16. 16.1 + 9 + 5 + 9 =
17. 17.₹87.45 + ₹38.60 =
18. 18.2 + 7 + 3 + 2 + 8 =
19. 19.50% of 840 =
20. 20.64 × 8 =
21. 21.15 × 15 =
22. 22.206 − 77 =
23. 23.51 + 29 =
24. 24.17 + 39 + 61 + 14 =
25. 25.14 × 15 =
26. 26.17 × 17 =
27. 27.Best estimate of 61 × 78? (a) 48000 (b) 9600 (c) 480 (d) 4800
28. 28.25% of 500 =
29. 29.14 × 19 =
30. 30.56 × 15 =
31. 31.59 × 15 =
32. 32.525 − 88 =
33. 33.Check with nines: 29 × 18 = 516. Correct or wrong? (a) correct (b) wrong
34. 34.19 × 13 =
35. 35.8 + 5 + 3 + 5 + 2 =
36. 36.22 × 50 =
37. 37.50% of 540 =
38. 38.Check with nines: 387 + 421 = 808. Correct or wrong? (a) wrong (b) correct
39. 39.86 + 71 + 18 + 88 =
40. 40.380 + 29 =

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