5.6+3.4=
0.1÷0.01=
-=
99×17+17=
+=
48×12.5%=
0.32÷=
×5÷×5=
列式:
145+398= 6-0.6= 0.24×50= 3﹣3÷7= (+)×56=
1.25×6×8= = = ÷0.75= ×4÷×4=