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.

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