问题 解答题
下面各题怎样简便就怎样算.
(1)3.7×99+3.7
(2)
3
4
+
1
6
-
3
8
(3)5.93+0.64+0.07+0.36
(4)(7.9-3.06÷0.68)×1.5(5)5.37-1.47-2.53(6)105×(
1
3
+
1
5
答案

(1)3.7×99+3.7,

=3.7×(99+1),

=3.7×100,

=370;

(2)

3
4
+
1
6
-
3
8

=

3
4
-
3
8
+
1
6

=

3
8
+
1
6

=

13
24

(3)5.93+0.64+0.07+0.36,

=(5.93+0.07)+(0.64+0.36),

=6+1,

=7;

(4)(7.9-3.06÷0.68)×1.5,

=(7.9-4.5)×1.5,

=3.4×1.5,

=5.1;

(5)5.37-1.47-2.53,

=5.37-(1.47+2.53),

=5.37-4,

=1.37;

(6)105×(

1
3
+
1
5
),

=105×

1
3
+105×
1
5

=35+21,

=56.

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