Question

8.78×5.5-5.5×4.78的简便计算？

Answer 1

8.78×5.5-5.5×4.78
=(8.78-4.78)x5.5
=4x5.5
=22
望采纳，谢谢

Answer 2

=（8.78-4.78）x5.5

=4x5.5

=22

Answer 3

解:已知8.78×5.5-5.5×4.78，可以用乘法分配律来解决，取公共部分5.5，接着就是8.78-4.78＝4得出两个数的差，再让5.5×4＝22。因此，8.78×5.5-5.5×4.78的简便运算为(8.78-4.78）×5.5＝4×5.5＝22。

Answer 4

8.78×5.5–5.5×4.78
=(8.78–4.78)×5.5
=4×5.5
=22

Answer 5

8.78ⅹ5.5-5.5X4.78

=（8.78-4.78）x5.5

=4x5.5

=4X5+4X0.5

=20+2

=22

追答

8.78ⅹ5.5-5.5X4.78
=（8.78-4.78）x5.5=4x5.5
=4X5+4X0.5
=20+2
=22