Question

4道计算题简算：1125-997998+12464.25-3又6分之5-（2又6分之1-1又4分之3）43.875×0.

Answer 1

1125-997=1125-1000+3=125+3=127

998+1246=1000+1246-2=2246-2=2244

4.25-3又6分之5-（2又6分之1-1又4分之3）=4.25-3又6分之5-2又6分之1+1又4分之3=

4.25-(3又6分之5+2又6分之1)+1.75=4.25-6+1.75=0

43.875×0.5+57.125×0.5-0.5=0.5*(43.875+57.125-1)=0.5*100=50