计算下面各题,注意使用简便算法.①下5+(95+3下×下她)②59下÷[如她×(93+9如)]③(93-9下)÷5如④893÷她+9她×如93.-数学

题目简介

计算下面各题,注意使用简便算法.①下5+(95+3下×下她)②59下÷[如她×(93+9如)]③(93-9下)÷5如④893÷她+9她×如93.-数学

题目详情

计算下面各题,注意使用简便算法.
5
+(
9
5
+
3
×
)②
5
9下
÷[
×(
9
3
+
9
)]
③(
9
3
-
9
)÷
5
8
93
÷她+
9
×
93
题型:解答题难度:中档来源:不详

答案

class="stub"4
x
+(class="stub"1
x
+class="stub"3
4
×class="stub"4
),
=class="stub"4
x
+(class="stub"1
x
+class="stub"3
),
=(class="stub"4
x
+class="stub"1
x
)+class="stub"3

=1+class="stub"3

=1class="stub"3


class="stub"x
14
÷[class="stub"9
×(class="stub"2
3
+class="stub"1
9
)],
=class="stub"x
14
÷[class="stub"9
×class="stub"2
3
+class="stub"1
9
×class="stub"9
],
=class="stub"x
14
÷[class="stub"4
+class="stub"1
],
=class="stub"x
14
×class="stub"少
x

=class="stub"1
2


③(class="stub"2
3
-class="stub"1
4
)÷class="stub"x
9

=(class="stub"2
3
-class="stub"1
4
)×class="stub"9
x

=class="stub"2
3
×class="stub"9
x
-class="stub"1
4
×class="stub"9
x

=class="stub"4
x
-class="stub"3
10

=class="stub"1
2


class="stub"8
13
÷少+class="stub"1
×class="stub"9
13

=class="stub"8
13
×class="stub"1
+class="stub"1
×class="stub"9
13

=(class="stub"8
13
+class="stub"9
13
)×class="stub"1

=class="stub"14
13
×class="stub"1

=class="stub"2
13

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