填一填，画一画．（1）点A的位置是（2，4），那么点B的位置是 ，点C的位置是 ．（2）将图①绕点B顺时针旋转90°，画出旋转后的图形．（3）将图②向下平移3格，再向右平移5格，分别画出两次平移后的图形．
直接写得数：1﹣= ×= ÷2÷= 2×80%=+= 15÷= 35×= ×÷×=
直接写出得数．﹣= ×= 12×= 1÷== = 1.6×4×0.25= 0÷=
直接写得数．+= ÷6= ×= 2﹣+=×16= 6﹣= ÷= 5×÷5×=
直接写得数．= == == 75%÷25%== =
= = = == = = == = = =
= 
×
= 
÷2÷
+
= 15÷
= 35×
= 
×
÷
=
﹣
= 
×
= 12×
= 1÷
=
= 
= 1.6×4×0.25= 0÷
=
+
= 
÷6= 
×
= 2﹣
+
=
×16= 6﹣
= 
÷
= 5×
÷5×
= 
=
= 
=
= 75%÷25%=
= 
=
= 
= 
= 
=
= 
= 
= 
=
= 
= 
= 
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