问题
解答题
计算.
100-23×3=
64÷2+38=
(100-56)÷4=
20+80×3=
75+25×4=
(34+56)×7=
96-180÷3=
答案
(1)100-23×3,
=100-69,
=31;
(2)64÷2+38,
=32+38,
=70;
(3)(100-56)÷4,
=44÷4,
=11;
(4)20+80×3,
=20+240,
=260;
(5)75+25×4,
=75+100,
=175;
(6)(34+56)×7,
=90×7,
=630;
(7)96-180÷3,
=96-60,
=36.