用递等式计算,能简算的要简算.①[1-(34-25)]×2526②132-768÷24③2-613÷926-23④3233×32.-数学

题目简介

用递等式计算,能简算的要简算.①[1-(34-25)]×2526②132-768÷24③2-613÷926-23④3233×32.-数学

题目详情

用递等式计算,能简算的要简算.
①[1-(
3
4
-
2
5
)]×
25
26

②132-768÷24
③2-
6
13
÷
9
26
-
2
3

32
33
×32.
题型:解答题难度:中档来源:不详

答案

①[1-(class="stub"3
4
-class="stub"2
5
)]×class="stub"25
26

=[1-class="stub"7
20
class="stub"25
26

=class="stub"13
20
×class="stub"25
26

=class="stub"5
8

②132-768÷24,
=132-32,
=100;
③2-class="stub"6
13
÷class="stub"9
26
-class="stub"2
3

=2-class="stub"6
13
×class="stub"26
9
-class="stub"2
3

=2-class="stub"4
3
-class="stub"2
3

=2-(class="stub"4
3
+class="stub"2
3
),
=2-2,
=0;
class="stub"32
33
×32,
=class="stub"32
33
×(33-1),
=class="stub"32
33
×
33-class="stub"32
33

=32-class="stub"32
33

=31class="stub"1
33

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