a. 62 : 4 + 2 . 52
= 36 : 4 + 2 . 25
= 9 + 50
= 59
b. 5 . 42 - 18 : 32
= 5 . 16 - 18 : 9
= 80 - 2
= 78
c. 80 - (4 . 52 - 3 . 22)
= 80 - (4 . 25 - 3 . 4)
= 80 - 100 +12
= -8
d. 450 - (4 . 53 - 22 . 25)
= 450 - (4 . 125 - 4 . 25)
= 450 - 500 +100
= 50
e. 32 . 42 - (12 - 5)2
= 9 . 16 - (122 - 120 + 52)
= 144 - 122 + 120 - 52
= 144 - 144 + 120 - 25
= 120 - 25
= 95
f. 24 . 5 + (13 - 4)2 - 131
= 16 . 5 + 92 - 131
= 80 + 81 - 131
= 161 - 131
= 30
a: \(6^2:4+2\cdot5^2\)
\(=36:4+2\cdot25\)
=9+50
=59
b: \(5\cdot4^2-18:3^2\)
\(=5\cdot16-18:9\)
=80-2
=78
c: \(80-\left(4\cdot5^2-3\cdot2^3\right)\)
\(=80-4\cdot25+3\cdot8\)
\(=80-100+24\)
=4
