100道四年级的分数口算求您了!
问题描述:
100道四年级的分数口算求您了!
答
9/4+9/4
7/11+6/11
245/17-134/17
7/9+8/9
6/82-43/82
4/9+80/9
7/2-3/2
12/13-11/13
41/26-31/26
8/19+21/19
1/5+4/5
227/13-200/13
3/7+5/7
4/9-1/9
16/3+2/3
6/221-8/221
7/2+7/2
6/23+7/23
17/5+61/5
14/3+5/3
12/7-10/7
8/19+11/19
20/51+31/51
61/7-5/7
13/2-11/2
85/78-7/78
24/49+25/49
21/23+32/23
41/98+57/98
7/21+7/21+7/21
7/21+10/23+14/21+13/23
1/7+6/7
1/8+7/8
1/7+1/8+6/7+7/8