(1)[920082009-(8-12009)]÷2×12;(2)4.75×819+1423×1.18.68-0.36+4.32-1.64.-数学

题目简介

(1)[920082009-(8-12009)]÷2×12;(2)4.75×819+1423×1.18.68-0.36+4.32-1.64.-数学

题目详情

(1)[9
2008
2009
-(8-
1
2009
)]÷2×
1
2

(2)
4.75×
8
19
+14
2
3
×1.1
8.68-0.36+4.32-1.64
题型:解答题难度:中档来源:不详

答案

(1)[9class="stub"2008
2009
-(8-class="stub"1
2009
)]÷2×class="stub"1
2

=[9+class="stub"2008
2009
-8+class="stub"1
2009
)]÷2×class="stub"1
2

=[(9-8)+(class="stub"2008
2009
+class="stub"1
2009
)]÷2×class="stub"1
2

=[1+1]÷2×class="stub"1
2

=2÷2×class="stub"1
2

=1×class="stub"1
2

=class="stub"1
2


(2)
4.75×class="stub"8
19
+14class="stub"2
3
×1.1
8.68-0.36+4.32-1.64

=
class="stub"19
4
×class="stub"8
19
+class="stub"44
3
×class="stub"11
10
(8.68+4.32)-(0.36+1.64)

=
2+class="stub"242
15
13-2

=
class="stub"272
15
11

=class="stub"272
165

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