5÷-÷5 2.94×+4.06÷
[15×(50%+]÷ 9.16×1.53﹣0.053×91.6
0.22=
6.8+1.28=
0.5÷0.25=
50×30%=
1﹣1÷7=
6÷=
×24=
2008﹣199=
+=
2.5×0.7×0.4=
0.4÷0.2= 1÷= 406﹣299= a﹣a×0=
①0.53×2.5+
②25×0.032×12.5
③ [()×]
④6.83+17.9﹣0.83+32.1
810÷30= 0.38+3.8= 0.15×0.2=
÷= ﹣×0= ×3÷3×=