3/4+1/6-1/2
=9/12+2/12-6/12
=11/12-6/12
=5/12
计算异分母分数加减法,要化成同分母分数,再相加减。
1/2-1/5+1/6
=5/10-2/10+1/6
=3/10+1/6
=9/30+5/30
=14/30
=7/15
注意结果要化成最简分数。
3/4+1/6-1/2
=9/12+2/12-6/12
=11/12-6/12
=5/12
计算异分母分数加减法,要化成同分母分数,再相加减。
1/2-1/5+1/6
=5/10-2/10+1/6
=3/10+1/6
=9/30+5/30
=14/30
=7/15
注意结果要化成最简分数。