下面各题怎样简便就怎样算.(1)3.7×99+3.7(2)34+16-38(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×(13+15)-六年级数学

题文

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
题型:解答题  难度:中档

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.

据专家权威分析,试题“下面各题怎样简便就怎样算.(1)3.7×99+3.7(2)34+16-38(3)5.93+..”主要考查你对  小数的四则混合运算及应用  等考点的理解。关于这些考点的“档案”如下:

小数的四则混合运算及应用

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