8513×38+7116×67+5614×45
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/31 00:05:05
85
×
+71
×
+56
×
1 |
3 |
3 |
8 |
1 |
6 |
6 |
7 |
1 |
4 |
4 |
5 |
![8513×38+7116×67+5614×45](/uploads/image/z/5250723-51-3.jpg?t=8513%C3%9738%2B7116%C3%9767%2B5614%C3%9745)
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.
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.