×10= ×= 1÷0.8= -= +=
15×= 1÷=+= 28×= --=
2.5÷0.5=
=
2.4×0.5=
2.5×0.4=
- = + - + =
43= 0.25÷2.5= 0.62=
2.8÷4=
3﹣0.98=
0.03÷0.01=
1-=
+=
-=
++=
--=
0.8×5=
7.6×10=
8.1-2.7= 3.6×2.5= 2÷0.5= 0.81+0.3=
0.32= 7.8a-2.3a-0.7a= - = + =
0.25 3