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计算.(1)8-15×57÷4 (2)9.6÷3.2+5.1×4 (4)60×

编辑:chaxungu时间:2026-04-27 13:21:16分类:小学数学题库

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)
(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.