Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 362 · 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. 1.9 + 1 + 7 + 9 =
2. 2.41² =
3. 3.153 − 79 =
4. 4.Best estimate of 702 × 3? (a) 210 (b) 4200 (c) 2100 (d) 21000
5. 5.Check with nines: 66 × 28 = 1848. Correct or wrong? (a) correct (b) wrong
6. 6.89² =
7. 7.66 × 4 =
8. 8.325 + 18 =
9. 9.1 + 8 + 4 + 9 =
10. 10.1400 ÷ 50 =
11. 11.₹68.65 − ₹28.55 =
12. 12.Best estimate of 78 × 92? (a) 72000 (b) 14400 (c) 7200 (d) 720
13. 13.26 × 8 =
14. 14.29² =
15. 15.5% of 270 =
16. 16.4 + 1 + 3 + 6 =
17. 17.Best estimate of 402 × 6? (a) 4800 (b) 24000 (c) 240 (d) 2400
18. 18.270 − 66 =
19. 19.1% of 200 =
20. 20.10% of 90 =
21. 21.Check with nines: 383 + 750 = 1132. Correct or wrong? (a) correct (b) wrong
22. 22.81² =
23. 23.50% of 760 =
24. 24.5 + 1 + 8 + 3 + 7 =
25. 25.121 × 4 =
26. 26.7 + 5 + 7 + 5 + 3 =
27. 27.58 × 8 =
28. 28.Check with nines: 797 + 730 = 1527. Correct or wrong? (a) correct (b) wrong
29. 29.3 + 1 + 9 + 1 =
30. 30.₹67.20 − ₹10.50 =
31. 31.₹35.95 + ₹39.25 =
32. 32.473 − 86 =
33. 33.Check with nines: 180 + 332 = 512. Correct or wrong? (a) correct (b) wrong
34. 34.2 + 9 + 8 + 7 + 1 =
35. 35.37 × 15 =
36. 36.81 − 46 =
37. 37.4 + 8 + 9 + 5 + 2 =
38. 38.46 × 15 =
39. 39.41 × 4 =
40. 40.319 + 17 =

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