怎样简便怎样算:(4)57×2z+27÷z2&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;(2)[4-(z8+44)÷44&图

题目简介

怎样简便怎样算:(4)57×2z+27÷z2&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;(2)[4-(z8+44)÷44&图

题目详情

怎样简便怎样算:
(4)
5
7
×
2
z
+
2
7
÷
z
2
&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;
(2)[4-(
z
8
+
4
4
÷
4
4
&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;
(4)0.625×z6+
z
8
×z6-z6
(4)(
4
l
+
5
4z
+
5
l
+
8
4z
l
400
&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;&图bs个;
(5)
4
2
+
4
6
+
4
42
+
4
20
+
4
z0
+
4
42
+
4
56
+
4
72
题型:解答题难度:中档来源:不详

答案

(8)(8)class="stub"n
7
×class="stub"2
q
+class="stub"2
7
÷class="stub"q
2

=class="stub"n
7
×class="stub"2
q
+class="stub"2
7
×class="stub"2
q

=(class="stub"n
7
+class="stub"2
7
)×class="stub"2
q

=8×class="stub"2
q

=class="stub"2
q


(2)[8-(class="stub"q
2
+class="stub"8
)]÷class="stub"8

=[8-class="stub"n
2
]×人,
=class="stub"q
2
×人,
=class="stub"q
2


(q)0.十2n×q十+class="stub"q
2
×q十-q十,
=(0.十2n+0.q7n-8)×q十,
=0×q十,
=0;

(人)(class="stub"人
9
+class="stub"n
8q
+class="stub"n
9
+class="stub"2
8q
)×class="stub"9
800

=[(class="stub"人
9
+class="stub"n
9
)+(class="stub"n
8q
+class="stub"2
8q
)]×class="stub"9
800

=[8+8]×class="stub"9
800

=2×class="stub"9
800

=class="stub"9
n0


(n)class="stub"8
2
+class="stub"8
+class="stub"8
82
+class="stub"8
20
+class="stub"8
q0
+class="stub"8
人2
+class="stub"8
n十
+class="stub"8
72

=8-class="stub"8
2
+class="stub"8
2
-class="stub"8
q
+class="stub"8
q
-class="stub"8
+class="stub"8
-class="stub"8
n
+class="stub"8
n
-class="stub"8
+class="stub"8
-class="stub"8
7
+class="stub"8
7
-class="stub"8
2
+class="stub"8
2
-class="stub"8
9

=8-class="stub"8
9

=class="stub"2
9

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