灵活计算下面各题.2-2÷3-1325×2.5×32125×(56+12)+0.85.02-1.37-2.6320%+47+80%-47813÷7+17×513.-数学

题目简介

灵活计算下面各题.2-2÷3-1325×2.5×32125×(56+12)+0.85.02-1.37-2.6320%+47+80%-47813÷7+17×513.-数学

题目详情

灵活计算下面各题.
2-2÷3-
1
3
25×2.5×32
12
5
×(
5
6
+
1
2
)+0.8
5.02-1.37-2.6320%+
4
7
+80%-
4
7
8
13
÷7+
1
7
×
5
13
题型:解答题难度:中档来源:不详

答案

(1)2-2÷3-class="stub"1
3

=2-class="stub"2
3
-class="stub"1
3

=2-(class="stub"2
3
+class="stub"1
3
),
=2-1,
=1;

(2)25×2.5×32,
=25×2.5×4×4×2,
=(25×4)×(2.5×4)×2,
=100×10×2,
=1000×2,
=2000;

(3)
12
5
×(class="stub"5
6
+class="stub"1
2
)+0.8,
=
12
5
×class="stub"5
6
+class="stub"12
5
×class="stub"1
2
+0.8,
=2+class="stub"6
5
+class="stub"4
5

=2+(class="stub"6
5
+class="stub"4
5
),
=2+2,
=4;

(4)5.02-1.37-2.63,
=5.02-(1.37+2.63),
=5.02-4,
=1.02;

(5)20%+class="stub"4
7
+80%-class="stub"4
7

=(20%+80%)+(class="stub"4
7
-class="stub"4
7
),
=1+0,
=1;

(6)class="stub"8
13
÷7+class="stub"1
7
×class="stub"5
13

=class="stub"8
13
×class="stub"1
7
+class="stub"1
7
×class="stub"5
13

=class="stub"1
7
×(class="stub"8
13
+class="stub"5
13
),
=class="stub"1
7
×1,
=class="stub"1
7

更多内容推荐