Mental Maths Questions Worksheet for Class 5
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.
NameDateTime takenScore ___ / 40
- 1.33 + 73 =
- 2.7 + ? = 10
- 3.14 + 15 =
- 4.8 + 4 =
- 5.50% of ₹290 =
- 6.51 × 4 =
- 7.38 + 9 =
- 8.58 − 31 =
- 9.12 + 13 =
- 10.Half of 178 =
- 11.You buy a notebook for ₹82 and pay with a ₹100 note. How much change do you get, in rupees?
- 12.12 + 9 =
- 13.Best estimate of 23 × 16? (a) 4000 (b) 400 (c) 40
- 14.252 ÷ 9 =
- 15.55 + 7 =
- 16.Best estimate of 54 × 76? (a) 40000 (b) 400 (c) 4000
- 17.30 × 8 =
- 18.9 + ? = 10
- 19.27 + 26 =
- 20.A train leaves at 6:45 and reaches the next city at 7:55. How many minutes is the journey?
- 21.You buy a notebook for ₹158 and pay with a ₹500 note. How much change do you get, in rupees?
- 22.You buy a bag of mangoes for ₹105 and pay with a ₹500 note. How much change do you get, in rupees?
- 23.66 + 8 =
- 24.Double 31 =
- 25.50% of ₹150 =
- 26.50 + ? = 100
- 27.25 children stand in rows of 4. How many full rows can they make?
- 28.308 − 278 =
- 29.56 × 3 =
- 30.22 × 4 =
- 31.Double 25 =
- 32.Best estimate of 213 + 122? (a) 500 (b) 100 (c) 300
- 33.61 × 9 =
- 34.61 + ? = 100
- 35.Double 87 =
- 36.75 − 29 =
- 37.13 children stand in rows of 3. How many full rows can they make?
- 38.26 + 27 =
- 39.Half of 184 =
- 40.53 + ? = 100
Answer key
- 106
- 3
- 29
- 12
- 145
- 204
- 47
- 27
- 25
- 89
- 18
- 21
- 400
- 28
- 62
- 4000
- 240
- 1
- 53
- 70
- 342
- 395
- 74
- 62
- 75
- 50
- 6
- 30
- 168
- 88
- 50
- 300
- 549
- 39
- 174
- 46
- 4
- 53
- 92
- 47
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths