问题 解答题
560÷7-45=40÷8+13=28×4-69=
(172+38)÷3=27+9×27=100-450÷5=
答案

(1)560÷7-45

=80-45

=35

(2)40÷8+13

=5+13

=18

(3)28×4-69

=112-69

=43

(4)(172+38)÷3

=210÷3

=70

(5)27+9×27

=(1+9)×27

=10×27

=270

(6)100-450÷5

=100-90

=10

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