Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 981 · 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. 1.6 + 4 + 9 + 6 + 6 =
2. 2.19 × 18 =
3. 3.13 × 5 =
4. 4.Check with nines: 225 + 837 = 1062. Correct or wrong? (a) wrong (b) correct
5. 5.₹31.85 − ₹5.25 =
6. 6.81² =
7. 7.51² =
8. 8.Best estimate of 42 × 61? (a) 4800 (b) 24000 (c) 2400 (d) 240
9. 9.Best estimate of 601 × 8? (a) 9600 (b) 480 (c) 4800 (d) 48000
10. 10.378 + 49 =
11. 11.310 ÷ 5 =
12. 12.10% of 710 =
13. 13.532 − 19 =
14. 14.1125 ÷ 25 =
15. 15.Best estimate of 699 × 5? (a) 35000 (b) 3500 (c) 7000 (d) 350
16. 16.79² =
17. 17.102 − 27 =
18. 18.395 ÷ 5 =
19. 19.21 × 5 =
20. 20.7 + 7 + 3 + 4 =
21. 21.Check with nines: 18 × 25 = 445. Correct or wrong? (a) correct (b) wrong
22. 22.385 ÷ 5 =
23. 23.47 × 15 =
24. 24.Check with nines: 423 + 925 = 1352. Correct or wrong? (a) wrong (b) correct
25. 25.43 × 15 =
26. 26.155 − 66 =
27. 27.557 − 89 =
28. 28.₹45.55 − ₹19.90 =
29. 29.328 + 17 =
30. 30.11 + 75 + 77 + 57 =
31. 31.5 + 2 + 5 + 8 + 9 =
32. 32.150 + 98 =
33. 33.85 × 50 =
34. 34.Best estimate of 299 × 4? (a) 2400 (b) 1200 (c) 120 (d) 12000
35. 35.36 + 26 + 23 + 12 =
36. 36.19² =
37. 37.7 + 1 + 6 + 8 + 3 =
38. 38.238 − 66 =
39. 39.81 + 16 + 12 + 21 =
40. 40.190 ÷ 5 =

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