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
- 1.23² =
- 2.30 × 8 =
- 3.104 ÷ 4 =
- 4.39 + 81 =
- 5.55 + 8 =
- 6.88 + 35 =
- 7.7 + 6 =
- 8.7 + ? = 10
- 9.2 + ? = 10
- 10.21 + 22 =
- 11.225 − 191 =
- 12.47 laddoos are packed in boxes of 5. How many laddoos are left over?
- 13.54 − 25 =
- 14.5% of ₹260 =
- 15.1 + ? = 10
- 16.288 ÷ 8 =
- 17.553 ÷ 7 =
- 18.96 ÷ 8 =
- 19.Double 78 =
- 20.1013 − 997 =
- 21.You buy a kite for ₹95 and pay with a ₹100 note. How much change do you get, in rupees?
- 22.You buy a pencil box for ₹46 and pay with a ₹100 note. How much change do you get, in rupees?
- 23.207 − 177 =
- 24.148 + 99 =
- 25.Best estimate of 138 + 407? (a) 300 (b) 700 (c) 500
- 26.18 + 17 =
- 27.26 + 28 =
- 28.Best estimate of 83 × 44? (a) 320 (b) 32000 (c) 3200
- 29.77 + 22 =
- 30.Best estimate of 97 × 26? (a) 300 (b) 3000 (c) 30000
- 31.217 − 182 =
- 32.Double 91 =
- 33.Half of 52 =
- 34.294 ÷ 6 =
- 35.10% of ₹690 =
- 36.You buy a kite for ₹28 and a pen for ₹38. You pay with a ₹100 note. How much change do you get, in rupees?
- 37.16² =
- 38.You start your homework at 6:00 and finish at 8:50. How many minutes did you work?
- 39.306 − 288 =
- 40.79 + 3 =
Answer key
- 529
- 240
- 26
- 120
- 63
- 123
- 13
- 3
- 8
- 43
- 34
- 2
- 29
- 13
- 9
- 36
- 79
- 12
- 156
- 16
- 5
- 54
- 30
- 247
- 500
- 35
- 54
- 3200
- 99
- 3000
- 35
- 182
- 26
- 49
- 69
- 34
- 256
- 170
- 18
- 82
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths