问题 解答题
7×7-9=45-2×7=12+12÷12=
0÷16×9=13×6-70=
答案

(1)7×7-9,

=49-9,

=40;

(2)45-2×7,

=45-14,

=31;

(3)12+12÷12,

=12+1,

=13;

(4)0÷16×9=0;

(5)13×6-70,

=78-70,

=8.

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