题目内容
计算下面各题.
3×(150-1530÷15)
34.7-
+65.3-
5-
×
+
(1-0.95)÷0.01
+
÷
.
3×(150-1530÷15)
34.7-
13 |
15 |
2 |
15 |
5-
3 |
8 |
2 |
3 |
1 |
4 |
(1-0.95)÷0.01
5 |
8 |
3 |
4 |
9 |
16 |
分析:(1)先算除法,再算减法,最后算乘法;
(2)根据加法交换律和结合律以及减法的性质进行简算;
(3)先算乘法,再根据加法结合律进行简算;
(4)先算减法,再算除法;
(5)先算除法,再算加法.
(2)根据加法交换律和结合律以及减法的性质进行简算;
(3)先算乘法,再根据加法结合律进行简算;
(4)先算减法,再算除法;
(5)先算除法,再算加法.
解答:解:
(1)3×(150-1530÷15)
=3×(150-102)
=3×48
=144;
(2)34.7-
+65.3-
=(34.7+65.3)-(
+
)
=100-1
=99;
(3)5-
×
+
=5-
+
=5-(
-
)
=5-0
=5;
(4)(1-0.95)÷0.01
=0.05÷0.01
=5;
(5)
+
÷
=
+
=
.
(1)3×(150-1530÷15)
=3×(150-102)
=3×48
=144;
(2)34.7-
13 |
15 |
2 |
15 |
=(34.7+65.3)-(
13 |
15 |
2 |
15 |
=100-1
=99;
(3)5-
3 |
8 |
2 |
3 |
1 |
4 |
=5-
1 |
4 |
1 |
4 |
=5-(
1 |
4 |
1 |
4 |
=5-0
=5;
(4)(1-0.95)÷0.01
=0.05÷0.01
=5;
(5)
5 |
8 |
3 |
4 |
9 |
16 |
=
5 |
8 |
4 |
3 |
=
47 |
24 |
点评:考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
练习册系列答案
相关题目