算一算。10-6= 9-1= 6-1=7-2= 8-2= 9-2=
能简则简 +++= ﹣（+）= ×÷= ﹣+= ××= ×÷6=
直接写得数． += ÷= ﹣= += += ++= +﹣= ×9= ×= ÷= ×= ÷=
解方程 x﹣=； 4x+=； x﹣0.3x=21．
计算（能简算的要简算）﹣+=××=÷÷=
直接写得数 += 1﹣= ﹣= ﹣= ×= ×= 0×= ÷6= ÷8= 2﹣= ÷= ÷=
+
+
+
= 
﹣（
+
）= 
×
=
﹣
+
= 
×
×
= 
×
+
= 
÷
= 
﹣
+
+
= 
+
+
= 
+
×
= 
÷
= 
×
= 
÷
=
x﹣
=
； 4x+
=
﹣
+
=
×
×
=
÷
÷
=
+
= 1﹣
= 
﹣
= 
﹣
=
×
= 
×
= 
÷6=
÷8= 2﹣
÷
÷
=
粤公网安备 44130202000953号