用递等式计算(能简单的要简单)①59+49×920÷65②1113+712-(1113-512)③(1-25%)×101-34④197×198+198⑤23÷[34×(1718-89)]⑥12007×

题目简介

用递等式计算(能简单的要简单)①59+49×920÷65②1113+712-(1113-512)③(1-25%)×101-34④197×198+198⑤23÷[34×(1718-89)]⑥12007×

题目详情

用递等式计算(能简单的要简单)
5
9
+
4
9
×
9
20
÷
6
5
11
13
+
7
12
-(
11
13
-
5
12
③(1-25%)×101-
3
4
④197×
1
98
+
1
98
2
3
÷[
3
4
×(
17
18
-
8
9
)]
1
2007
×2001+
5
2007
+
1
2007
3
1
2
:x=1
3
4
:(1.6×5)
题型:解答题难度:中档来源:不详

答案

class="stub"5
9
+class="stub"4
9
×class="stub"9
20
÷class="stub"6
5

=class="stub"5
9
+class="stub"1
5
×class="stub"5
6

=class="stub"5
9
+class="stub"1
6

=class="stub"10
18
+class="stub"3
18

=class="stub"13
18


class="stub"11
13
+class="stub"7
12
-(class="stub"11
13
-class="stub"5
12
),
=class="stub"11
13
-class="stub"11
13
+class="stub"7
12
+class="stub"5
12

=1;

③(1-25%)×101-class="stub"3
4

=75%×101-75%,
=(101-1)×75%,
=100×75%,
=75;

④197×class="stub"1
98
+class="stub"1
98

=(196+1)×class="stub"1
98
+class="stub"1
98

=196×class="stub"1
98
+1×class="stub"1
98
+class="stub"1
98

=2+class="stub"1
98
×2,
=2class="stub"1
49


class="stub"2
3
÷[class="stub"3
4
×(class="stub"17
18
-class="stub"8
9
)],
=class="stub"2
3
÷[class="stub"3
4
×(class="stub"17
18
-class="stub"16
18
)],
=class="stub"2
3
÷[class="stub"3
4
×class="stub"1
18
],
=class="stub"2
3
×24,
=16;

class="stub"1
2007
×2001+class="stub"5
2007
+class="stub"1
2007

=class="stub"2001
2007
+class="stub"5
2007
+class="stub"1
2007

=1;

3class="stub"1
2
:x=1class="stub"3
4
:(1.6×5),
1class="stub"3
4
x=(1.6×5)×3class="stub"1
2

1class="stub"3
4
1class="stub"3
4
=8×3class="stub"1
2
÷1class="stub"3
4

x=16.

更多内容推荐