计算(能简算的要简算)149-37+49-4778+(34-16)89-(29+47)12+14+18+116+132.-数学

题目简介

计算(能简算的要简算)149-37+49-4778+(34-16)89-(29+47)12+14+18+116+132.-数学

题目详情

计算(能简算的要简算)
14
9
-
3
7
+
4
9
-
4
7

7
8
+(
3
4
-
1
6
)

8
9
-(
2
9
+
4
7
)

1
2
+
1
4
+
1
8
+
1
16
+
1
32
题型:解答题难度:中档来源:不详

答案

(1)class="stub"14
9
-class="stub"3
7
+class="stub"4
9
-class="stub"4
7

=(class="stub"14
9
+class="stub"4
9
)-(class="stub"3
7
+class="stub"4
7
),
=2-1,
=1;

(2)class="stub"7
8
+(class="stub"3
4
-class="stub"1
6
),
=class="stub"7
8
+class="stub"7
12

=1class="stub"11
24


(3)class="stub"8
9
-(class="stub"2
9
+class="stub"4
7
),
=class="stub"8
9
-class="stub"2
9
-class="stub"4
7

=class="stub"2
3
-class="stub"4
7

=class="stub"2
21


(4)class="stub"1
2
+class="stub"1
4
+class="stub"1
8
+class="stub"1
16
+class="stub"1
32

=class="stub"1
2
+class="stub"1
2
-class="stub"1
4
+class="stub"1
4
-class="stub"1
8
+class="stub"1
8
-class="stub"1
16
+class="stub"1
16
-class="stub"1
32

=1-class="stub"1
32

=class="stub"31
32

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