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用简便方法计算:①7÷0.25②69×523③1950×7+5750④(13+12-136)×36.
题目详情
用简便方法计算:
①7÷0.25
②69×
③
×7+
④(
+
-
)×36.
③
×7+
④(
+
-
)×36.
5 5 23 23
×7+
④(
+
-
)×36.
19 19 50 50
④(
+
-
)×36.
57 57 50 50
+
-
)×36.
1 1 3 3
-
)×36.
1 1 2 2
)×36.
1 1 36 36
①7÷0.25
②69×
5 |
23 |
③
19 |
50 |
57 |
50 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
5 |
23 |
③
19 |
50 |
57 |
50 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
5 |
23 |
19 |
50 |
57 |
50 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
19 |
50 |
57 |
50 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
57 |
50 |
1 |
3 |
1 |
2 |
1 |
36 |
1 |
3 |
1 |
2 |
1 |
36 |
1 |
2 |
1 |
36 |
1 |
36 |
▼优质解答
答案和解析
①7÷0.25,
=(7×4)÷(0.25×4),
=28÷1,
=28;
②69×
,
=15;
③
×7+
,
=
×7+
×3,
=
×(7+3),
=
×10,
=3
;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
5 5 523 23 23,
=15;
③
×7+
,
=
×7+
×3,
=
×(7+3),
=
×10,
=3
;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
19 19 1950 50 50×7+
,
=
×7+
×3,
=
×(7+3),
=
×10,
=3
;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
57 57 5750 50 50,
=
×7+
×3,
=
×(7+3),
=
×10,
=3
;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
19 19 1950 50 50×7+
×3,
=
×(7+3),
=
×10,
=3
;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29. +
19 19 1950 50 50×3,
=
×(7+3),
=
×10,
=3
;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
19 19 1950 50 50×(7+3),
=
×10,
=3
;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
19 19 1950 50 50×10,
=3
;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
4 4 45 5 5;
④(
+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
1 1 13 3 3+
-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
1 1 12 2 2-
)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
1 1 136 36 36)×36,
=
×36+
×36−
×36,
=12+18-1,
=29.
1 1 13 3 3×36+
×36−
×36,
=12+18-1,
=29.
1 1 12 2 2×36−
×36,
=12+18-1,
=29. −
1 1 136 36 36×36,
=12+18-1,
=29.
=(7×4)÷(0.25×4),
=28÷1,
=28;
②69×
5 |
23 |
=15;
③
19 |
50 |
57 |
50 |
=
19 |
50 |
19 |
50 |
=
19 |
50 |
=
19 |
50 |
=3
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
5 |
23 |
=15;
③
19 |
50 |
57 |
50 |
=
19 |
50 |
19 |
50 |
=
19 |
50 |
=
19 |
50 |
=3
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
19 |
50 |
57 |
50 |
=
19 |
50 |
19 |
50 |
=
19 |
50 |
=
19 |
50 |
=3
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
57 |
50 |
=
19 |
50 |
19 |
50 |
=
19 |
50 |
=
19 |
50 |
=3
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
19 |
50 |
19 |
50 |
=
19 |
50 |
=
19 |
50 |
=3
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29. +
19 |
50 |
=
19 |
50 |
=
19 |
50 |
=3
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
19 |
50 |
=
19 |
50 |
=3
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
19 |
50 |
=3
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
4 |
5 |
④(
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
1 |
3 |
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
1 |
2 |
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
1 |
36 |
=
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
1 |
3 |
1 |
2 |
1 |
36 |
=12+18-1,
=29.
1 |
2 |
1 |
36 |
=12+18-1,
=29. −
1 |
36 |
=12+18-1,
=29.
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