|
(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×(
+25),62 7
=49×
+49×25,62 7
=434+1225,
=1659;
(4)60×(34-23+25 ),
=60×36,
=2160.
|
(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×(
+25),62 7
=49×
+49×25,62 7
=434+1225,
=1659;
(4)60×(34-23+25 ),
=60×36,
=2160.