计算题(1)81×[(417+0.05×700)÷127](2)(915-1012÷114)÷113(3)[(223+1.5)÷56-325]÷2.8.-数学

题目简介

计算题(1)81×[(417+0.05×700)÷127](2)(915-1012÷114)÷113(3)[(223+1.5)÷56-325]÷2.8.-数学

题目详情

计算题
(1)81×[(4
1
7
+0.05×700)÷1
2
7
]

(2)(9
1
5
-10
1
2
÷1
1
4
)÷1
1
3

(3)[(2
2
3
+1.5)÷
5
6
-3
2
5
]÷2.8
题型:解答题难度:中档来源:陆良县模拟

答案

(1)81×[(4class="stub"1
7
+0.05×700)÷1class="stub"2
7
]

=81×[(4class="stub"1
7
+35)÷1class="stub"2
7
],
=81×(class="stub"274
7
×class="stub"7
9
),
=81×class="stub"274
9

=2466;

(2)(9class="stub"1
5
-10class="stub"1
2
÷1class="stub"1
4
)÷1class="stub"1
3

=(9class="stub"1
5
-8class="stub"2
5
÷1class="stub"1
3

=class="stub"4
5
×class="stub"3
4

=class="stub"3
5


(3)[(2class="stub"2
3
+1.5)÷class="stub"5
6
-3class="stub"2
5
]÷2.8

=[class="stub"25
6
÷class="stub"5
6
-3class="stub"2
5
]÷2.8,
=(5-3class="stub"2
5
)÷2.8,
=class="stub"8
5
÷2.8,
=class="stub"4
7

更多内容推荐