甲、乙、丙、丁四人平均有邮票38张，甲与乙的平均张数是42，乙、丙、丁三人平均张数是36，求乙有邮票多少张？
836+164= 351﹣42= 25×4= 72÷8= 0×123=﹣= 1﹣= 5×7+5= 16÷4﹣4= 8﹣6÷2=
5.6÷0.7= 8109÷9= 1﹣35%= 2×÷2×=+=÷25%= 3.05+6.2= 9.8﹣0.98=
计算.﹣50% 60%× 1﹣÷5+﹣﹣÷90%﹣12.5% 48%× 25%÷
直接写得数．+=×3.6= 2.4﹣1= 12÷3= 23﹣2.03﹣2.003=（64+）×= 3.6÷0.36=×4÷×4= 1﹣﹣=（﹣）×30=
直接写得数 30﹣19.02= 1﹣0.94+0.06= 3.125+1= 1×5÷×= 1÷0.1﹣1×0.1= 12×3.14﹣6.28=++=×0.25+3=
﹣
= 1﹣
= 5×7+5=
÷2×
=
+
=
÷25%= 3.05+6.2= 9.8﹣0.98=
﹣50% 60%×
1﹣
÷5
+
﹣
÷90%
﹣12.5% 48%×
25%÷
+
=
×3.6= 2.4﹣1
= 12
÷3=
）×
= 3.6÷0.36=
×4÷
×4=
﹣
﹣
=（
﹣
）×30=
= 1×5÷
×
+
=
×0.25+3=
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