Mental Math
20 × 5 + 10
110
(2/5) + (1/5)
3/5
1.2 + 3.5
4.7
12
1
5 × (3 + 6)
45
52 + 25
50
(7/5) × (3/8)
21/40
12.51 - 7.51
5
52
25
5 + 5 - 5 + 32
14
32 - 22 + 3
8
(3/5) × (2/3) × (1/6)
1/15
123.123 + 456.456
579.579
103
1000
(2 - 10) ÷ 2 + 53
121
2 - 5 + 3 - 7 + 6 - 5 + 10 - 20
-16
(2/5) × (2/5) × (2/5)
8/125
30.05 × 2.1
63.105
352
1225
[25 ÷ (3 + 3 - 1) + 6 × 3] + 22
27
(20+42 × 1) ÷ 6
6
(2/3) ÷ (2/3) ÷ (2/3) ÷ (2/3) ÷ (2/3)
27/8
9.80 ÷ 0.14
70
622
3844
[(33 + 6 ÷ 3) + 7 ÷ 1 + 3] + {2 × [(1-5) + 3]}
37