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脱式计算.(能简算的要简算)11.76+32.5-3.767.8×1011613×1134-313÷3411(1+13×74)÷(52+45)

题目详情
脱式计算.(能简算的要简算)
11.76+32.5-3.76              
7.8×101
16
13
×
11
34
-
3
13
÷
34
11
                
(1+
1
3
×
7
4
)÷(
5
2
+
4
5
▼优质解答
答案和解析
(1)11.76+32.5-3.76
=11.76-3.76+32.5
=8+32.5
=40.5;

(2)7.8×101
=7.8×(100+1)
=7.8×100+7.8×1
=780+7.8
=787.8;

(3)
16
13
×
11
34
-
3
13
÷
34
11

=
16
13
×
11
34
-
3
13
×
11
34

=(
16
13
-
3
13
)×
11
34

=1×
11
34

=
11
34


(4)(1+
1
3
×
7
4
)÷(
5
2
+
4
5

=(1+
7
12
)÷(
5
2
+
4
5

=
19
12
÷
33
10

=
95
198