>
(36+14)÷2 = 15×6-40= 81÷9÷3=
90-(60÷5)= 36÷3-8= 7×8×9=
25×4×5= 20-72÷6= 90÷3÷3=
30×60÷5=
答案25 50 3 78 4 504 500 8 10 36
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