题目内容

简便计算
5.02-1.37-2.63
144×(
3
4
-
1
9
+
1
6

8
9
×7+
8
9
÷
1
3
-
8
9
(1)5.02-1.37-2.63,
=5.02-(1.37+2.63),
=5.02-4,
=1.02;

(2)144×(
3
4
-
1
9
+
1
6
),
=144×
3
4
-144×
1
9
+144×
1
6

=108-16+24,
=116;

(3)
8
9
×7+
8
9
÷
1
3
-
8
9

=
8
9
×7+
8
9
×3-
8
9

=
8
9
×(7+3-1),
=
8
9
×9,
=8.
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