问题 解答题
236+199=5800÷29=(32+28)×5=
323-299=150÷5=100+100÷4=
31×6=6300÷300=90-90÷6=
答案

(1)236+199,

=236+200-1,

=436-1,

=435;

(2)5800÷29=200;

(3)(32+28)×5,

=50×5,

=300;

(4)323-299,

=323-300+1,

=24;

(5)150÷5=30;

(6)100+100÷4,

=100+25,

=125;

(7)31×6=186;

(8)6300÷300=21;

(9)90-90÷6,

=90-15,

=75.

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