计算:(1)20523-2.73-8.27+1713(2)59×7512+19×1712×5(3)[(88+89)×1.125-54]÷23%(4)[249÷(325-1115)×1111]÷4.02

题目简介

计算:(1)20523-2.73-8.27+1713(2)59×7512+19×1712×5(3)[(88+89)×1.125-54]÷23%(4)[249÷(325-1115)×1111]÷4.02

题目详情

计算:
(1)20
5
23
-2.73-8.27+1
7
13

(2)
5
9
×
7
5
12
+
1
9
×
1
7
12
×5
(3)[(88+
8
9
)×1.125-54]÷23%
(4)[2
4
9
÷(3
2
5
-
11
15
)×1
1
11
]÷4.02.
题型:解答题难度:中档来源:不详

答案

(1)20class="stub"5
23
-2.73-8.27+1class="stub"7
13

=(20class="stub"5
23
+1class="stub"7
13
)-(2.73+8.27),
=21class="stub"226
299
-11,
=10class="stub"226
299

(2)class="stub"5
9
×
7class="stub"5
12
+class="stub"1
9
×
1class="stub"7
12
×5,
=class="stub"5
9
×
7class="stub"5
12
+class="stub"5
9
×1class="stub"7
12

=(7class="stub"5
12
+1class="stub"7
12
)×class="stub"5
9

=9×class="stub"5
9

=5;
(3)[(88+class="stub"8
9
)×1.125-54]÷23%,
=[(88+class="stub"8
9
)×1class="stub"1
8
-54]÷23%,
=[(88×class="stub"9
8
+class="stub"8
9
×class="stub"9
8
)-54]÷23%,
=[99+1-54]÷0.23,
=46÷0.23,
=200;
(4)[2class="stub"4
9
÷(3class="stub"2
5
-class="stub"11
15
)×1class="stub"1
11
]÷4.02,
=[class="stub"22
9
÷2class="stub"2
3
×1class="stub"1
11
]÷4.02,
=[class="stub"22
9
×class="stub"3
8
×class="stub"12
11
]÷4.02,
=1÷4.02,
=100÷402,
=class="stub"50
201

更多内容推荐