17/25*7+7/25*8的简便运算还有99.9*222+33.3*334的简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/07 11:05:51
xR]oP+
f==aiaT#Ju]851&,b1p(\yߌ^K_;|ᵞ
QkGˮ:!L#$ !yfWlv.XTtr/3cosCu #r 4bżPbRvbc,oOe't[` ^bAK7,
5O f"L(UAKhDVTDcH 0 X0)ȊE"2,bbI+yİZ`Y-.߳q5_י
SUUNɓn QX(QM 1m^N:\ంWƱ$q*@e*5:2?V6{_j>}sp.V@ң-6E~0~:x{ xͯhpm<i) S3(f+Nh:FT%ѿdĭ紃_`¼ǃư;/k.ӃsYbG-Ό
17/25*7+7/25*8的简便运算还有99.9*222+33.3*334的简便运算
17/25*7+7/25*8的简便运算
还有99.9*222+33.3*334的简便运算
17/25*7+7/25*8的简便运算还有99.9*222+33.3*334的简便运算
99.9×222+33.3×334
=33.3×666+33.3×334
=33.3×(666+334)
=33.3×1000
=33300
您好:
17/25*7+7/25*8
=7/25x17+7/25x8
=7/25x(17+8)
=7/25x25
=7
99.9*222+33.3*334
=33.3x3x222+33.3x334
=33.3x(666+334)
=33.3x1000
=33300
不明白,可以追问
如有帮助,记得采纳,谢谢
祝学习进步!
17/25*7+7/25*8
=(17+8)/25×7
=7
17/25*7+7/25*8
=7*(17/25+1/25*8)
=7*(17/25+8/25)
=7*[(17+8)/25]
=7*25/25
=7
99.9*222+33.3*334
=33.3*3*222+33.3*334
=33.3*(3*222+334)
=33.3*(666+334)
=33.3*1000
=33300
用乘法 分配律和结合律 即可