把过程写清楚
第1个回答 2020-03-10
3.14x32x1.25x5
=3.14x(8x4)x1.25x5
=3.14x(8x1.25)x(4x5)
=3.14x10x20
=314x2
=628本回答被提问者采纳
=3.14x(8x4)x1.25x5
=3.14x(8x1.25)x(4x5)
=3.14x10x20
=314x2
=628本回答被提问者采纳
第2个回答 2020-03-10
25x32x5简便运算方法
=25x4x8x5
=(25x4)x(8x5)
=100x40
=4000
=25x4x8x5
=(25x4)x(8x5)
=100x40
=4000
第3个回答 2020-03-10
3.14*32*1.25*5
=3.14*1.25*32*5
=3.14*1.25*160
=3.14*200
=628
=3.14*1.25*32*5
=3.14*1.25*160
=3.14*200
=628