计算下面各题,能简算的要简算.45-310-15,23-(512-14)1112-310+112-71014-18+56,1916-(316+78)813+1517+1813+217.-数学

题目简介

计算下面各题,能简算的要简算.45-310-15,23-(512-14)1112-310+112-71014-18+56,1916-(316+78)813+1517+1813+217.-数学

题目详情

计算下面各题,能简算的要简算.
4
5
-
3
10
-
1
5
2
3
-(
5
12
-
1
4
11
12
-
3
10
+
1
12
-
7
10
1
4
-
1
8
+
5
6
19
16
-(
3
16
+
7
8
8
13
+
15
17
+
18
13
+
2
17
题型:解答题难度:中档来源:不详

答案


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

=class="stub"8
10
-class="stub"3
10
-class="stub"2
10

=class="stub"3
10


(2)class="stub"2
3
-(class="stub"5
12
-class="stub"1
4
),
=class="stub"2
3
-class="stub"1
6

=class="stub"1
2


(3)class="stub"11
12
-class="stub"3
10
+class="stub"1
12
-class="stub"7
10

=(class="stub"11
12
+class="stub"1
12
)-(class="stub"3
10
+class="stub"7
10
),
=1-1,
=0;

(4)class="stub"1
4
-class="stub"1
8
+class="stub"5
6

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

=class="stub"23
24


(5)class="stub"19
16
-(class="stub"3
16
+class="stub"7
8
),
=class="stub"19
16
-class="stub"3
16
-class="stub"7
8

=1-class="stub"7
8

=class="stub"1
8


(6)class="stub"8
13
+class="stub"15
17
+class="stub"18
13
+class="stub"2
17

=(class="stub"8
13
+class="stub"18
13
)+(class="stub"15
17
+class="stub"2
17
),
=2+1,
=3.

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