Question

6.8+1.25x6.8x8简便方法 4.25除以2.5乘以101减去1.7简便方法 4x（9.3-5.7）+3.6简便

6.8+1.25x6.8x8简便方法
4.25除以2.5乘以101减去1.7简便方法
4x（9.3-5.7）+3.6简便方法
0.67x99+0.67简便方法
8.53+6-8.53+6简便方法

Answer 1

6.8+1.25×6.8×8
=6.8+1.25×8×6.8
=6.8+68
=74.8
所以原式的计算结果为74.8

Answer 2

6.8+1.25x6.8x8
=6.8+1.25x8x6.8
=6.8+10x6.8
=6.8+68
=74.8

4.25÷2.5×101-1.7
=4.25÷0.25÷10×101-1.7
=（4+0.25）×4÷10×101-1.7
=17÷10×101-1.7
=1.7×101-1.7
=1.7×（101-1）
=1.7×100
=170

4x（9.3-5.7）+3.6

=4x3.6+3.6
=3.6x（4+1）
=3.6x5
=18

0.67x99+0.67

=0.67x（99+1）
=0.67x100
=67

8.53+6-8.53+6

=8.53-8.53+6+6
=0+12
=12