直接写出得数．
20+5.8=
= 40÷12= 0.23=
1.25÷1%=
=
= 30.1÷5.9≈
直接写出得数．
3.8﹣2.9= 960÷80= 2.4+1.6=（
+
）×4=
1.5×
= 24÷
=
÷
=
×
=
直接写数对又快．
2.3+3.57= 8×12.5%= 5.7+11.8+4.3= 1÷100%=
0.99×9+0.99= 40÷9= 12×（
×
）=
×
=
﹣0.5=
×25%=
直接写得数．
0.67+4.5= 1+2%=
=
=
=
=
= 0.32÷4=
2.2+8= 5÷
×
= 0.25××4= 15+5÷0.2=
4.38﹣3.42+5.62﹣2.08= 125÷
= 1÷25%= 0×
=
2﹣
= 32×1.25×2.5=