甲班有52人，乙班有48人，在一次测验中，两个班的平均成绩为88分，已知乙班比甲班的平均分高3分，那么甲班的平均分是多少？
直接写出得数×3=×16=×=（+）×4=×+×=+=÷3= 4÷=
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×1= 52﹣42= 0.75﹣0.5=×=÷= 125×0.08= 0.5+0.02=÷=÷= 0.15×6= 12÷0.3= 0÷=
直接写得数．×16= 12÷= 24×=×÷= 1÷=÷15=÷=×÷×=
直接写得数． 10÷=÷=×= 55×÷=×2= 1÷=÷= 0×+=
×3=
×16=
×
=（
+
）×4=
×
+
×
=
+
=
÷3= 4÷
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×1= 52﹣42= 0.75﹣0.5=
=
÷
= 125×0.08=
÷
= 0.15×6= 12÷0.3= 0÷
=
×16= 12÷
= 24×
=
×
÷
=
÷15=
÷
=
×
÷
×
=
=
÷
=
= 55×
÷
=
×2= 1÷
=
÷
= 0×
+
=
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