Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 683 · 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. 1.70 + ? = 100
2. 2.A train leaves at 1:30 and reaches the next city at 4:20. How many minutes is the journey?
3. 3.50% of ₹830 =
4. 4.2 + ? = 10
5. 5.1023 − 981 =
6. 6.4 + ? = 10
7. 7.11 + ? = 100
8. 8.5% of ₹590 =
9. 9.27 × 3 =
10. 10.18 × 8 =
11. 11.5% of ₹210 =
12. 12.26 + 76 =
13. 13.192 ÷ 8 =
14. 14.319 − 291 =
15. 15.29 + 66 =
16. 16.45 + ? = 100
17. 17.228 ÷ 4 =
18. 18.Double 29 =
19. 19.5% of ₹170 =
20. 20.A train leaves at 3:10 and reaches the next city at 4:05. How many minutes is the journey?
21. 21.91 × 4 =
22. 22.Best estimate of 663 + 811? (a) 1700 (b) 1500 (c) 1300
23. 23.A cricket match starts at 5:35 and the first innings ends at 8:10. How many minutes did the innings last?
24. 24.Best estimate of 89 × 97? (a) 90000 (b) 9000 (c) 900
25. 25.Double 97 =
26. 26.14 × 3 =
27. 27.19² =
28. 28.72 + 9 =
29. 29.78 ÷ 3 =
30. 30.147 ÷ 7 =
31. 31.96 ÷ 4 =
32. 32.29 + 28 =
33. 33.You buy a bag of mangoes for ₹45 and a pen for ₹15. You pay with a ₹100 note. How much change do you get, in rupees?
34. 34.21² =
35. 35.178 + 99 =
36. 36.54 − 38 =
37. 37.You buy a cricket ball for ₹51 and pay with a ₹100 note. How much change do you get, in rupees?
38. 38.Half of 64 =
39. 39.165 ÷ 5 =
40. 40.Double 47 =

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