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计算下面各题.(能够简便计算的要求简便计算)①730-240÷15×16②79×511+29×511③34+34×3④[1一(12-14)]×23.
题目详情
计算下面各题.(能够简便计算的要求简便计算)
①730-240÷15×16
②
×
+
×
③
+
×3
④[1一(
-
)]×
.
×
+
×
③
+
×3
④[1一(
-
)]×
.
7 7 9 9
5 5 11 11
2 2 9 9
5 5 11 11
+
×3
④[1一(
-
)]×
.
3 3 4 4
×3
④[1一(
-
)]×
.
3 3 4 4
-
)]×
.
1 1 2 2
)]×
.
1 1 4 4
.
2 2 3 3
①730-240÷15×16
②
7 |
9 |
5 |
11 |
2 |
9 |
5 |
11 |
③
3 |
4 |
3 |
4 |
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
7 |
9 |
5 |
11 |
2 |
9 |
5 |
11 |
③
3 |
4 |
3 |
4 |
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
7 |
9 |
5 |
11 |
2 |
9 |
5 |
11 |
3 |
4 |
3 |
4 |
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
3 |
4 |
3 |
4 |
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
3 |
4 |
1 |
2 |
1 |
4 |
2 |
3 |
1 |
2 |
1 |
4 |
2 |
3 |
1 |
4 |
2 |
3 |
2 |
3 |
▼优质解答
答案和解析
①730-240÷15×16,
=730-16×16,
=730-256,
=474;
②
×
+
×
,
=(
+
)×
,
=1×
,
=
;
③
+
×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
7 7 79 9 9×
5 5 511 11 11+
2 2 29 9 9×
5 5 511 11 11,
=(
+
)×
,
=1×
,
=
;
③
+
×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
7 7 79 9 9+
)×
,
=1×
,
=
;
③
+
×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
2 2 29 9 9)×
,
=1×
,
=
;
③
+
×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
5 5 511 11 11,
=1×
,
=
;
③
+
×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
5 5 511 11 11,
=
;
③
+
×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
5 5 511 11 11;
③
+
×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
3 3 34 4 4+
×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
3 3 34 4 4×3,
=
×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
3 3 34 4 4×(1+3),
=
×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
3 3 34 4 4×4,
=3;
④[1一(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
1 1 12 2 2-
)]×
,
=[1-
]×
,
=
×
,
=
.
1 1 14 4 4)]×
,
=[1-
]×
,
=
×
,
=
.
2 2 23 3 3,
=[1-
]×
,
=
×
,
=
.
1 1 14 4 4]×
,
=
×
,
=
.
2 2 23 3 3,
=
×
,
=
.
3 3 34 4 4×
,
=
.
2 2 23 3 3,
=
.
1 1 12 2 2.
=730-16×16,
=730-256,
=474;
②
7 |
9 |
5 |
11 |
2 |
9 |
5 |
11 |
=(
7 |
9 |
2 |
9 |
5 |
11 |
=1×
5 |
11 |
=
5 |
11 |
③
3 |
4 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
7 |
9 |
5 |
11 |
2 |
9 |
5 |
11 |
=(
7 |
9 |
2 |
9 |
5 |
11 |
=1×
5 |
11 |
=
5 |
11 |
③
3 |
4 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
7 |
9 |
2 |
9 |
5 |
11 |
=1×
5 |
11 |
=
5 |
11 |
③
3 |
4 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
2 |
9 |
5 |
11 |
=1×
5 |
11 |
=
5 |
11 |
③
3 |
4 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
5 |
11 |
=1×
5 |
11 |
=
5 |
11 |
③
3 |
4 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
5 |
11 |
=
5 |
11 |
③
3 |
4 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
5 |
11 |
③
3 |
4 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
3 |
4 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
3 |
4 |
=
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
3 |
4 |
=
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
3 |
4 |
=3;
④[1一(
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
1 |
4 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
2 |
3 |
=[1-
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
1 |
4 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
2 |
3 |
=
3 |
4 |
2 |
3 |
=
1 |
2 |
3 |
4 |
2 |
3 |
=
1 |
2 |
2 |
3 |
=
1 |
2 |
1 |
2 |
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