用递等式计算.848-800÷16×1212.48-0.7×(5.12÷0.8)89×[34-(716-14)].-数学

题目简介

用递等式计算.848-800÷16×1212.48-0.7×(5.12÷0.8)89×[34-(716-14)].-数学

题目详情

用递等式计算.
848-800÷16×12
12.48-0.7×(5.12÷0.8)
8
9
×[
3
4
-(
7
16
-
1
4
)]
题型:解答题难度:中档来源:不详

答案

(1)848-800÷16×12,
=848-50×12,
=848-600,
=248;

(2)12.48-0.7×(5.12÷0.8),
=12.48-0.7×6.4,
=12.48-4.48,
=8;

(3)class="stub"8
9
×[class="stub"3
4
-(class="stub"7
16
-class="stub"1
4
)]

=class="stub"8
9
×[class="stub"3
4
-class="stub"3
16
],
=class="stub"8
9
×class="stub"9
16

=class="stub"1
2

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