3.14×0.32= 0.4+2.56= 6.21÷3= ×B÷×3=
3.99+0.1= 1÷1%= ÷3= 6- = 0.25× ×4=
5-3.09= = 4.3+3.57= 1.9-2÷4= 4× ÷4× =
3.14×6=
8÷=
4.2×=
1-=
÷15=
2.4÷=
+=
1÷=
×÷×=
÷ = ÷ = ×18= × =
- = + = 0× = ÷ =
2- = 4.9× = ÷ = ×10=
× = 3.3× = ×12.5= 1÷ =
100×2.5%= 6.8÷10%= 1-35%= × ÷ × =
×
20
6
信息一:天安门广场的占地面积数十万位和万位上的数字都是4,其余各个数位上的数字都是0。
信息二:北京故宫的占地面积数十万位上是7,万位上是2,其余各个数位上的数字都是0。
0.4÷0.2= 1÷= 406﹣299= a﹣a×0=