f) 151 - 2^91 : 2^88 + 1^2 . 3
= 151 - (2^91-88) + 1^2 . 3
= 151 - 2^3 +1 . 3
=151 - 8 + 3
= 143 + 3
= 146
g) 2^38 : 2^36 + 5^1 . 3^2 - 7^2
=( 2^38-36) + 5 . 9 - 49
=2^2 + 45 - 49
=4 +45 -49
=0
h) 3.5^2 + 15 . 2^2 + 26 :2
= 3. 25 +15 . 4 +13
= 75 +60 +13
=148
i) 5^3 . 2 - 100 :4 +2^3 . 5
= 125 . 2 - 25 +8 . 5
= 250 - 25 + 40
= 265
j) 6^2 : 9 + 50 . 2 -3^3 . 3
= 36 : 9 +100 - 27 .3
=4 + 100 -81
=23
k) 5^13 :5^10 -25 . 2^2
=(5^13-10) - 25 . 4
= 5^3 -100
= 125 - 100
= 25
