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=（2.5+6.5）×5.4－8×（3+0.8）=10×5.4－24－6.4=54－24－6.4=30－6.4=23.6

Answer 2

2.5×5.4+6.5×5.4－8×3.8=（2.5+6.5）×5.4－8×（3+0.8）=10×5.4－24－6.4=54－24－6.4=30－6.4=23.6

Answer 3

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
=8×5.4+5.4－8×3.8
=8×(5.4－3.8)+5.4
=8×1.6+5.4
=12.8+5.4
=18.2

Answer 4

简便运算如下：
原式=5.4*（2.5+6.5）-8*3.8
=5.4*9-8*3.8
=48.6-30.4
=18.2

Answer 5

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
=5.4×（10-1）-3.8×（10-2）=54-5.4-38+7.6
=16+2.2=18.2