直接写出得数．
+
= 10﹣5.75= 7÷0.01=
×
= 1.7×5.4×0=
54+49+46= 6298÷70=（
+）×30= 1×（
﹣1÷3）=
﹣×=
直接写出得数．
①2﹣
= ②0.1÷0.01= ③
×
=④
+
=
⑤127+28= ⑥1÷7+
= ⑦1.8×0.3= ⑧2.9+4.5=
⑨
×2÷×2= ⑩0.25×99+0.25= ．
简算
2500+450÷18×32
2008×
47×（
+
）×46
1.25×32×0.25．
直接写得数
0.25×4=
5.2+8=
2.5﹣0.36﹣0.64=
=
5×4÷5×4=
1÷3×
=
直接写得数．
0.25×16×4=
+
=
=
0.85+0.2=