Question

20道加减乘除混合口算难度中等或简单！谢谢！

最好是六年级水平！

Answer 1

3/8+7/10+5/8=17/10
7/8-(1/8+3/4)=0
4/7+1/6-4/7=1/6
2-7/9-2/9=1
3/5+7/8+2/5=15/8
7/9-(1/9+1/3)=1/3
1/4+(2/5+3/4)=7/5
5/6-3/10+1/6-7/10=0
3/4+1/6-2/3=1/4
7/8-1/4+4/9=77/72
1-1/3+2/7=20/21
1/2+4/5-3/10=1
5/6-(2/3-1/9)=5/18
9/10-(3/4+1/8)=1/40
1/2+2/3-3/4=5/12
7/8-1/6+1/4=23/24
1-(3/4-2/9)=17/36
9/10-1/5-1/2=1/5
1/4+3/7+1/2=33/28
7/8-(2/3+1/6)=1/24
1-(1/3+3/5)=1/15
1/2+1/4+1/3=13/12
7/8+1/4+1/2=5/8
5/7-(4/7+1/9)=2/63
1-1/4-1/2=1/4
3/4-1/6-1/3=1/4
3/10+1/4+2/5=19/20
2/3+1/6+1/12=11/12
1-1/4-2/5=7/20
1/2+1/9+1/12=25/36
(注：/
前面的为分子,后面的为分母,如1/2是二分之一)
自己选32道
满意请点击右下角的采纳答案，谢谢