1和
和2
3和
4和
1 4
=
+ = - = 0.26×99+0.26= 0.25=
1- = + = 25×0.19×4= 2 =
4.8÷0.64.8÷0.9 2.4÷0.42.4×2.4
4÷7= 7÷4= =1
1=÷= 3 = =÷
=133÷12=
= = = =
=÷= =÷=
① =
② =
③ =
④ =
⑤ =
⑥ =
0.11 3