计算下列各题(能简算的写出简算过程)18+57+6.875+2779÷115+29×51113÷(23-25)×354.82-5.2÷0.8×0.6.-数学

题目简介

计算下列各题(能简算的写出简算过程)18+57+6.875+2779÷115+29×51113÷(23-25)×354.82-5.2÷0.8×0.6.-数学

题目详情

计算下列各题(能简算的写出简算过程)
1
8
+
5
7
+6.875+
2
7
7
9
÷
11
5
+
2
9
×
5
11

1
3
÷(
2
3
-
2
5
)×
3
5
4.82-5.2÷0.8×0.6.
题型:解答题难度:中档来源:不详

答案

(1)class="stub"1
8
+class="stub"5
7
+
6.875+class="stub"2
7

=class="stub"1
8
+class="stub"5
7
+
6class="stub"7
8
+class="stub"2
7

=(class="stub"1
8
+
6class="stub"7
8
)+(class="stub"5
7
+class="stub"2
7
),
=7+1,
=8;

(2)class="stub"7
9
÷class="stub"11
5
+class="stub"2
9
×class="stub"5
11

=class="stub"7
9
×class="stub"5
11
+class="stub"2
9
×class="stub"5
11

=class="stub"5
11
×(class="stub"7
9
+class="stub"2
9
),
=class="stub"5
11
×
1,
=class="stub"5
11


(3)class="stub"1
3
÷
class="stub"2
3
-class="stub"2
5
)×class="stub"3
5

=class="stub"1
3
÷
class="stub"10
15
-class="stub"6
15
)×class="stub"3
5

=class="stub"1
3
÷
class="stub"4
15
×class="stub"3
5

=class="stub"1
3
×class="stub"15
4
×class="stub"3
5

=class="stub"3
4


(4)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92.

更多内容推荐