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用简便方法计算下面各题483+274+517+226=437×62.4+547×6225=

题目详情
用简便方法计算下面各题
483+274+517+226=
4
3
7
×62.4+5
4
7
×62
2
5
=


3
7
×62.4+5
4
7
×62
2
5
=
3
7
3377+5
4
7
×62
2
5
=
4
7
4477
2
5
2255
▼优质解答
答案和解析
(1)483+274+517+226
=(483+517)+(274+226)
=1000+500
=1500;

(2)4
3
7
×62.4+5
4
7
×62
2
5

=(4
3
7
+5
4
7
)×62.4
=10×62.4
=624.
3
7
333777×62.4+5
4
7
×62
2
5

=(4
3
7
+5
4
7
)×62.4
=10×62.4
=624.
+5
4
7
444777×62
2
5
222555
=(4
3
7
+5
4
7
)×62.4
=10×62.4
=624.
3
7
333777+5
4
7
)×62.4
=10×62.4
=624.
4
7
444777)×62.4
=10×62.4
=624.