Question

6.28×3.5-0.28×3.5怎么简便计算？

Answer 1

你好，
=（6.28－0.28）×3.5
=6×3.5
=21

Answer 2

6.28×3.5-0.28×3.5
=（6.28-0.28）×3.5
=6×3.5
=21

Answer 3

6.28×3.5-0.28×3.5
=（6.28-0.28）×3.5
=6×3.5
=21
所以答案为21。

Answer 4

前面后面都有一个公因式，3.5可以提取出来，就等于6.28减去个零点28=6，6×3点5=21

Answer 5

6.28×3.5-0.28×3.5
=（6.28-0.28）×3.5
=6×3.5
=21