直接写出得数
170×400= 0.32×500= 3.5×200= 1.5﹣0.06= 0.75÷15=
1.01×99= 
+
= 0.51÷17= 32.8+19.01= 4.9×0.7=
0.87﹣0.49= 17.5﹣（2.5+3.8）=
直接写出得数
170×400= 0.32×500= 3.5×200= 1.5﹣0.06= 0.75÷15=
1.01×99= += 0.51÷17= 32.8+19.01= 4.9×0.7=
0.87﹣0.49= 17.5﹣（2.5+3.8）=
=
=
= 1
= 1.2×
= 1
=
=
= 3
= 0.9﹣
= 0.75+
= 24×
=
=
÷
= 18÷
=
×
×0=
+
=
×
=
÷10= 1÷
﹣
×
=
×3= 0÷
=
÷
=
×
=
×39=
×
=
÷
=
÷
=
÷3=
=
=
=
=
=
=
=
=
=
=
+
= 1÷
= 14﹣
﹣
=
×
=
﹣
=
×
=（
+
）×72=
粤公网安备 44130202000953号