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用简便方法计算.(1)3.8+1314+6.2+31114(2)25÷27+35×72(3)(1-213)×26+26÷13×2.
题目详情
用简便方法计算.
(1)3.8+1
+6.2+3
(2)
÷
+
×
(3)(1-
)×26+26÷13×2.
+6.2+3
(2)
÷
+
×
(3)(1-
)×26+26÷13×2.
3 3 14 14
11 11 14 14
÷
+
×
(3)(1-
)×26+26÷13×2.
2 2 5 5
2 2 7 7
3 3 5 5
7 7 2 2
)×26+26÷13×2.
2 2 13 13
(1)3.8+1
3 |
14 |
11 |
14 |
(2)
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
(3)(1-
2 |
13 |
3 |
14 |
11 |
14 |
(2)
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
(3)(1-
2 |
13 |
3 |
14 |
11 |
14 |
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
(3)(1-
2 |
13 |
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
2 |
13 |
2 |
13 |
▼优质解答
答案和解析
(1)3.8+1
+6.2+3
,
=(3.8+6.2)+(1
+3
),
=10+5,
=15;
(2)
÷
+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
3 3 314 14 14+6.2+3
11 11 1114 14 14,
=(3.8+6.2)+(1
+3
),
=10+5,
=15;
(2)
÷
+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
3 3 314 14 14+3
),
=10+5,
=15;
(2)
÷
+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
11 11 1114 14 14),
=10+5,
=15;
(2)
÷
+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
2 2 25 5 5÷
2 2 27 7 7+
3 3 35 5 5×
7 7 72 2 2,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
2 2 25 5 5×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
7 7 72 2 2+
×
,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
3 3 35 5 5×
,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
7 7 72 2 2,
=(
+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
2 2 25 5 5+
)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
3 3 35 5 5)×
,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
7 7 72 2 2,
=1×
,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
7 7 72 2 2,
=
;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
7 7 72 2 2;
(3)(1-
)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
2 2 213 13 13)×26+26÷13×2,
=
×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
11 11 1113 13 13×26+
×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
26 26 2613 13 13×2,
=
×11+
×2,
=
×(11+2),
=
×13,
=26.
26 26 2613 13 13×11+
×2,
=
×(11+2),
=
×13,
=26.
26 26 2613 13 13×2,
=
×(11+2),
=
×13,
=26.
26 26 2613 13 13×(11+2),
=
×13,
=26.
26 26 2613 13 13×13,
=26.
(1)3.8+1
3 |
14 |
11 |
14 |
=(3.8+6.2)+(1
3 |
14 |
11 |
14 |
=10+5,
=15;
(2)
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
=
2 |
5 |
7 |
2 |
3 |
5 |
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
3 |
14 |
11 |
14 |
=(3.8+6.2)+(1
3 |
14 |
11 |
14 |
=10+5,
=15;
(2)
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
=
2 |
5 |
7 |
2 |
3 |
5 |
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
3 |
14 |
11 |
14 |
=10+5,
=15;
(2)
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
=
2 |
5 |
7 |
2 |
3 |
5 |
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
11 |
14 |
=10+5,
=15;
(2)
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
=
2 |
5 |
7 |
2 |
3 |
5 |
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
2 |
5 |
2 |
7 |
3 |
5 |
7 |
2 |
=
2 |
5 |
7 |
2 |
3 |
5 |
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
2 |
5 |
7 |
2 |
3 |
5 |
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
7 |
2 |
3 |
5 |
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
3 |
5 |
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
7 |
2 |
=(
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
2 |
5 |
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
3 |
5 |
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
7 |
2 |
=1×
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
7 |
2 |
=
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
7 |
2 |
(3)(1-
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
2 |
13 |
=
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
11 |
13 |
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
26 |
13 |
=
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
26 |
13 |
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
26 |
13 |
=
26 |
13 |
=
26 |
13 |
=26.
26 |
13 |
=
26 |
13 |
=26.
26 |
13 |
=26.
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