Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 938 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.36 × 3 =
2. 2.34 children stand in rows of 3. How many full rows can they make?
3. 3.55 + 44 =
4. 4.15 × 4 =
5. 5.You buy a box of crayons for ₹35 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
6. 6.6 + ? = 10
7. 7.155 ÷ 5 =
8. 8.57 − 13 =
9. 9.Double 31 =
10. 10.77 + 4 =
11. 11.90 − 58 =
12. 12.You buy a notebook for ₹12 and pay with a ₹100 note. How much change do you get, in rupees?
13. 13.Half of 164 =
14. 14.27² =
15. 15.62 − 17 =
16. 16.87 + 5 =
17. 17.21 + 23 =
18. 18.63 × 3 =
19. 19.188 ÷ 4 =
20. 20.16 + 18 =
21. 21.51 + 53 =
22. 22.13 × 8 =
23. 23.Best estimate of 690 + 273? (a) 1200 (b) 1000 (c) 800
24. 24.1009 − 975 =
25. 25.3 + ? = 10
26. 26.5% of ₹900 =
27. 27.62 × 4 =
28. 28.47 + 4 =
29. 29.219 − 178 =
30. 30.A cricket match starts at 8:40 and the first innings ends at 10:50. How many minutes did the innings last?
31. 31.470 ÷ 5 =
32. 32.Half of 110 =
33. 33.95 laddoos are packed in boxes of 8. How many laddoos are left over?
34. 34.70 + 18 =
35. 35.Best estimate of 273 + 413? (a) 500 (b) 900 (c) 700
36. 36.Best estimate of 44 × 78? (a) 320 (b) 32000 (c) 3200
37. 37.A film starts at 5:55 and ends at 7:35. How many minutes long is the film?
38. 38.You start your homework at 1:20 and finish at 2:20. How many minutes did you work?
39. 39.24 + 26 =
40. 40.23 + 24 =

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