直接写出得数．
0.333×3≈ 0.375×0.375= 734﹣298= 24
÷8=
2.8×25+1.2×25= 0.48×
= 1.25×
×8= 8.2+0.54+0.46=
直接写得数．
①10﹣4.7= ②
÷5.25= ③
÷
= ④1÷
= ⑤4÷9×
=
⑥3.5÷40= ⑦
+6.25= ⑧0.74×100= ⑨12.2+8%= ⑩15×（
+
）=
直接写出得数
①1+53%= ②4+5.6= ③1﹣
= ④
﹣
=
⑤
÷
= ⑥3.9÷13= ⑦0.125×0.8= ⑧
×
=
直接写出得数．
4÷0.8= 0÷
= 1﹣
= 100×1%=
0.45×1000= 9÷
= 8.7﹣7=
+=
786﹣298= 3.14×8=
÷
= 25×0.7×4=
2﹣2÷3=（
﹣0.375）×5=
×
÷×= 75﹣2.1﹣2.9=
直接写得数
0.3÷
= 4﹣
=
×12=（4.2+
）×2×0=
3.7+5= 300×0.3%=
×
= 3×1
+3×=
1+
÷1+=（1
+
）÷
= 4×
×0.25= 0.125×32=