①1.25×0.96×80
②55× +3÷7
③ ×[ ÷( - )]
④ + + + (提示: - = )
72+28=
2×=
34.6﹣12.8=
600÷20=
1.23×0.4=
642÷6= 0.9×99+0.9= 1.25×80= 2.5÷0.01=
÷ = 2﹣ ﹣ = 3﹣ ﹣ = ( ÷ )×30=
分数:
小数:
0.25×3.2= + = 0.7÷0.01= 9.04+0.6=
-0.375= 13÷91= 10÷20%= 0.81× =