Question

9.8*5.5用简便方法怎么做

Answer 1

（10-0.2）x5.5
＝10x5.5-0.2x5.5
＝55-1.1
＝53.9

Answer 2

追答

谢谢。 望采纳

Answer 3

9.8乘以5+9.8乘以0.5
＝49+4.9

Answer 4

=（10-0.2）×5.5

追答

=10×5.5-0.2×5.5
=55-1.1
=53.9

Answer 5

（10-0.2）×5.5

追答

＝55-11＝53.9