把下面各组分数通分.1124和2372712和1315512、78和111635、910和11151512、423和74511112、356和2720.-数学

题目简介

把下面各组分数通分.1124和2372712和1315512、78和111635、910和11151512、423和74511112、356和2720.-数学

题目详情

把下面各组分数通分.
11
24
23
72
   
7
12
13
15
  
5
12
7
8
11
16
3
5
9
10
11
15
   1
5
12
、4
2
3
和7
4
5
   1
11
12
、3
5
6
和2
7
20
题型:解答题难度:中档来源:不详

答案

class="stub"11
24
=class="stub"11×3
24×3
=class="stub"33
72

class="stub"23
72
=class="stub"23
72


class="stub"7
12
=class="stub"7×5
12×5
=class="stub"35
60

class="stub"13
15
=class="stub"13×4
15×4
=class="stub"52
60


class="stub"5
12
=class="stub"5×8
12×8
=class="stub"40
96

class="stub"7
8
=class="stub"7×12
8×12
=class="stub"84
96

class="stub"11
16
=class="stub"11×6
16×6
=class="stub"66
96


class="stub"3
5
=class="stub"3×6
5×6
=class="stub"18
30

class="stub"9
10
=class="stub"9×3
10×3
=class="stub"27
30

class="stub"11
15
=class="stub"11×2
15×2
=class="stub"22
30


⑤1class="stub"5
12
=class="stub"17
12
=class="stub"17×5
12×5
=class="stub"85
60

4class="stub"2
3
=class="stub"14
3
=class="stub"14×20
3×20
=class="stub"280
60

7class="stub"4
5
=class="stub"39
5
=class="stub"39×12
5×12
=class="stub"468
60


⑥1class="stub"11
12
=class="stub"23
12
=class="stub"23×5
12×5
=class="stub"115
60

3class="stub"5
6
=class="stub"23
6
=class="stub"23×10
6×10
=class="stub"230
60

2class="stub"7
20
=class="stub"47
20
=class="stub"47×3
20×3
=class="stub"141
60

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