6+8=
8+6=
14-6=
14-8=
5+70=
70+5=
75-5=
75-70=
1.85﹣+= 1÷×= +0.375=
2.4﹣= (+)×2.4= 5÷×5÷=
10×45%= 1.25×8= 40×(1﹣20%)=