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计算.(1)8-15×57÷4(2)9.6÷3.2+5.1×4(3)49×(310÷35+25)(4)60×(34-23+25)

题目详情
计算.
(1)8-15×57÷4
(2)9.6÷3.2+5.1×4 (3)49×(310÷35+25) (4)60×(34-23+25 )
▼优质解答
答案和解析
(1)8-15×57÷4,
=8-855÷4,
=8-213.75,
=-205.75;

(2)9.6÷3.2+5.1×4,
=3+20.4,
=23.4;

(3)49×(310÷35+25)
=49×(
62
7
+25),
=49×
62
7
+49×25,
=434+1225,
=1659;

(4)60×(34-23+25 ),
=60×36,
=2160.