列竖式计算.2.5+3.7=37×18=5.1﹣4.5=416÷4=
看谁算得又快又准。9-2= 6+2= 5+3=5+2= 3+7= 10-10=
6-3= 6+3= 7-6=8-8= 9-8= 10-8=
看谁算得又快又准。8-4= 8+1= 9-2= 4+5= 3+6= 6-1=
看看谁算得准。9-4= 9+1= 9-6=8+1= 7+2= 8-7=
看看谁算得准。8-5= 9-4= 9+1=4+6= 7-3= 8-5=