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8513×38+7116×67+5614×45.

编辑:chaxungu时间:2026-04-27 14:17:06分类:小学数学题库

85
1
3
×
3
8
+71
1
6
×
6
7
+56
1
4
×
4
5

85
1
3
×
3
8
+71
1
6
×
6
7
+56
1
4
×
4
5

=(80+5
1
3
)×
3
8
+(70+1
1
6
)×
6
7
+(55+1
1
4
)×
4
5

=80×
3
8
+5
1
3
×
3
8
+70×
6
7
+1
1
6
×
6
7
+55×
4
5
+1
1
4
×
4
5

=30+2+60+1+44+1,
=(30+60+44)+(2+1+1),
=134+4,
=138.