
42的因数有:1,2,3,6,7,14,21,42. 30的因数有:1,2,3,5,6,10,15,30. 42和30的最大公因数是:6. 42÷6=7(个) 30÷6=5(个) 答:正好分完,最多可以分给6个小组,每个小组分得大气球7个,小气球5个.

42的因数有:1,2,3,6,7,14,21,42. 30的因数有:1,2,3,5,6,10,15,30. 42和30的最大公因数是:6. 42÷6=7(个) 30÷6=5(个) 答:正好分完,最多可以分给6个小组,每个小组分得大气球7个,小气球5个.
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