把下面各组分数通分.(1)23和1518(2)518和2324(3)56和415(4)415和1518.-数学

题目简介

把下面各组分数通分.(1)23和1518(2)518和2324(3)56和415(4)415和1518.-数学

题目详情

把下面各组分数通分.
(1)
2
3
15
18
(2)
5
18
23
24

(3)
5
6
4
15
(4)
4
15
15
18
题型:解答题难度:中档来源:不详

答案

(1)class="stub"2
3
=class="stub"2×6
3×6
=class="stub"12
18

class="stub"15
18
=class="stub"15
18


(2)class="stub"5
18
=class="stub"5×4
18×4
=class="stub"20
72

class="stub"23
24
=class="stub"23×3
24×3
=class="stub"69
72


(3)class="stub"5
6
=class="stub"5×15
6×15
=class="stub"75
90

class="stub"4
15
=class="stub"4×6
15×6
=class="stub"24
90


(4)class="stub"4
15
=class="stub"4×6
15×6
=class="stub"24
90

class="stub"15
18
=class="stub"15×5
18×5
=class="stub"75
90

更多内容推荐