问题 解答题
70-70÷70=420÷20×8=840÷30=
750÷50+80=300÷2÷5=
答案

(1)70-70÷70,

=70-1,

=69;

(2)420÷20×8,

=21×8,

=168;

(3)840÷30,

=28;

(4)750÷50+80,

=15+80,

=95;

(5)300÷2÷5,

=150÷5,

=30.

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