直接写出得数．
4.5﹣1.7=
= 2.5×13×4= 4×
÷4×=
8.2÷0.1=
×
= 4.5﹣
= 1+
÷+1=
直接写出得数．
1.2﹣0.12= 1.25×0.16=
×
= 3÷20%= 3÷8+
=
﹣
﹣
= 3÷
﹣÷3= 7×
÷7×= 0.99+0.99×99=
直接写出得数．
7.2+2.8=
8﹣2.5=
0.3+0.6=
0.32+0.8=
2×
=
15×
= 1﹣0.52= 1÷
=
+
= 16×
=
+0= 2.5×4=
﹣
= 1﹣
=
×5=
直接写出得数．
①30﹣19.02=
②3.125+1
=
③0.4×0.4=
④1÷0.1﹣1×0.1=
⑤1﹣0.94+0.06=
⑥0.056×
=
直接写出得数．
24.06+0.4=
﹣
=
+
=
+
﹣+=
÷6= 5﹣
+
=
×25= 12.5×32×2.5=