早教吧作业答案频道 -->数学-->
简便方法计算(1/2-1/5+5/12)x60(5/6-1/12)x6/51/7x5/11+5/11x6/713/2x5+13/2x6-13/211/10-8/9-1/97/2÷4+0.25x36.5
题目详情
简便方法计算
(1/2-1/5+5/12)x60
(5/6-1/12)x6/5
1/7x5/11+5/11x6/7
13/2x5+13/2x6-13/2
11/10-8/9-1/9
7/2÷4+0.25x36.5
(1/2-1/5+5/12)x60
(5/6-1/12)x6/5
1/7x5/11+5/11x6/7
13/2x5+13/2x6-13/2
11/10-8/9-1/9
7/2÷4+0.25x36.5
▼优质解答
答案和解析
(1/2-1/5+5/12)x60
=1/2*60-1/5*60+5/12*60
=30-12+25
=43
(5/6-1/12)x6/5
=5/6*6/5-1/12*6/5
=1-1/10
=9/10
1/7x5/11+5/11x6/7
=5/11（1/7+6/7）
=5/11*1
=5/11
13/2x5+13/2x6-13/2
=13/2（5+6-1）
=13/2*10
=65
11/10-8/9-1/9
=11/10-（8/9+1/9）
=1又1/10-1
=1/10
7/2÷4+0.25x36.5
=7/2×1/4+1/4×73/2
=1/4（7/2+73/2）
=1/4×80/2
=1/4×40
=10
=1/2*60-1/5*60+5/12*60
=30-12+25
=43
(5/6-1/12)x6/5
=5/6*6/5-1/12*6/5
=1-1/10
=9/10
1/7x5/11+5/11x6/7
=5/11（1/7+6/7）
=5/11*1
=5/11
13/2x5+13/2x6-13/2
=13/2（5+6-1）
=13/2*10
=65
11/10-8/9-1/9
=11/10-（8/9+1/9）
=1又1/10-1
=1/10
7/2÷4+0.25x36.5
=7/2×1/4+1/4×73/2
=1/4（7/2+73/2）
=1/4×80/2
=1/4×40
=10
看了 简便方法计算(1/2-1/5...的网友还看了以下：