直接写出得数．
21.8+8.2=
÷
=
×
= 5﹣
=
8×25×1.25=
×
=
+
= 1÷
=
25÷10%=（0.28+0.7）÷7=
直接写出得数
+3÷
=
×5×
=（
+
）×4= 81÷
=
﹣
=
×10= 5.5+12.4+4.5= 4﹣（0.6+1.9）=
1.9×4×0.5= 0.77+0.33=
直接写出下列各题的结果
152﹣68= 5.2+8= 1.3×40%= 0.45÷1.5=
=
=43= 8.5b+5b=
直接写出得数．
48×25%= 24.15÷3= 1÷
=（
）×15= 0.3×2÷0.3×2=
=
=
=
= 21÷
=
直接写出得数．
÷1= 2﹣
= 1.8×
= 39÷
=
7﹣2.36﹣1.64= 5÷7+
= 1+45%=
×3÷×3=
32+23=
=
