( )
23+35= 76-73= 88-72= 6+43=
6+90= 88-8= 78-70= 7+40=
+5=85
30+=37
73-=70
5.2÷0.04= 1.32+0.8= 8 ÷8= 25+7.5=
51.51÷51= + ÷ = 1.5×2÷1.5×2= 149÷30≈