①5.7×+1.3÷
②(+﹣)÷
③÷8×(÷)
④32÷32
⑤7.75×+25%×0.125
⑥73×25%+×26+0.25
24×50=
14.3﹣4.03=
4.2×(-)=
:( )=
0.35÷0.7=
0.5×=
9÷3%+30%=
1﹣1÷1+1=
⑴3.14×52×8﹣3.14×42×7.5 ⑵(+)÷ ⑶4.6×[1÷(2.1﹣2.08)]