简便计算:128 11/16×10 3/5+71 5/16×3/5

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/04 15:33:22
简便计算:128 11/16×10 3/5+71 5/16×3/5

简便计算:128 11/16×10 3/5+71 5/16×3/5
简便计算:128 11/16×10 3/5+71 5/16×3/5

简便计算:128 11/16×10 3/5+71 5/16×3/5
128
11/16×10
=55/8
3/5+71
=358/5
5/16×3/5
=3/16

512811/16×10
=55/8
3×5+71
=358/5
5/16×3/5
=3/16

128又 11/16×10又 3/5+71 又5/16×3/5
=128又 11/16×(10+ 3/5)+71 又5/16×3/5
=128又 11/16×10+128又 11/16×3/5+71 又5/16×3/5
=(128+ 11/16)×10+(128+ 11/16+71+5/16)×3/5
=1280+ 55/8+200×3/5
=1280+ 6+7/8+120
=1406又7/8