Question

2.5×5.4+6.5×5.4-8×3.8简便运算怎么写？

Answer 1

2.5*5.4+6.5*5.4-8*3.8
=5.4*（2.5+6.5）-8*3.8
=5.4*9-8*（4-0.2）
=48.6-32+1.6
=18.2

Answer 2

2.5×5.4+6.5×5.4-8×3.8
=5.4×(2.5+6.5)-8×3.8
=5.4×9-8×3.8
=48.6-30.4
=18.2

Answer 3

2.5×5.4=13.5
6.5×5.4=35.1
8×3.8=30.4
13.5+35.1−30.4=18.2

Answer 4

2.5*5.4+6.5*5.4-8*3.8
=（2.5+6.5）*5.4-8*3.8
=9*5.4-8*3.8
=48.6-30.6
=18

Answer 5

2.5×5.4+6.5×5.4-8×3.8
=（2.5+6.5）×5.4-30.4
=9×5.4-30.4
=48.6-30.4
=18.2