Question

计算下面各题，怎样简便怎样算． 33.24-17.45-2.55 14.68+...

计算下面各题，怎样简便怎样算． 33.24-17.45-2.55 14.68+16.29+5.32 2.87+3.94+0.06+1.13 11.33-3.78-2.22 20.43-6.88-2.43 0.845+2.66+3.34．

Answer 1

（1）33.24-17.45-2.55
=33.24-（17.45+2.55）
=33.24-20
=13.24

（2）14.68+16.29+5.32      
=14.68+5.32+16.29
=20+16.29
=36.29

（3）2.87+3.94+0.06+1.13
=2.87+1.13+（3.94+0.06）
=4+4
=8

（4）11.33-3.78-2.22  
=11.33-（3.78+2.22）
=11.33-6
=5.33

（5）20.43-6.88-2.43 
=20.43-2.43-6.88
=18-6.88
=11.12

（6）0.845+2.66+3.34
=0.845+（2.66+3.34）
=0.845+6
=6.845