搜搜考试网要简便运算啊!也要梯等式..我没有要你们只做两个,我只是打两个梯等式的等号举例子而已..
来源：学生作业帮 编辑：搜搜考试网作业帮 分类：数学作业 时间：2024/08/01 23:17:33
要简便运算啊!也要梯等式..我没有要你们只做两个,我只是打两个梯等式的等号举例子而已..
37.2*5.4+3.28*54
=
=
0.8888*0.8+0.1111*1.6
=
=
9.99*7.78+3.33*6.66
=
=
37.2*5.4+3.28*54
=
=
0.8888*0.8+0.1111*1.6
=
=
9.99*7.78+3.33*6.66
=
=
加分啊
37.2*5.4+3.28*54
= 37.2*5.4+32.8*5.4
=(37.2+32.8)*5.4
= 70*5.4
=378
0.8888*0.8+0.1111*1.6
= 0.1111*8*0.8+0.1111*1.6
= 0.1111*(6.4+1.6)
=0.8888
9.99*7.78+3.33*6.66
= 9.99*7.78+9.99*2.22
=9.99*(7.78+2.22)
=9.99*10
=99.9
37.2*5.4+3.28*54
= 37.2*5.4+32.8*5.4
=(37.2+32.8)*5.4
= 70*5.4
=378
0.8888*0.8+0.1111*1.6
= 0.1111*8*0.8+0.1111*1.6
= 0.1111*(6.4+1.6)
=0.8888
9.99*7.78+3.33*6.66
= 9.99*7.78+9.99*2.22
=9.99*(7.78+2.22)
=9.99*10
=99.9