Устный счет

\(100 \div (12 + 8) =\)

36 + 65 =

\(25 \cdot 4 =\)

\(42 \div 7 - 2 =\)

\(2 + 2\cdot 6 =\)

\(34 - 18 \div 2 =\)

\((81 + 19) \cdot 8 =\)

100 - 21 =