人教版六年级上册数学P15页第3题计算下面各题：1/3x3/5+1……要求过程、答案、能简算的简算.1/33/5+11/2+5/4x4/55/7-5/9x5/71/6x(5-2/3)1-5/7x21/257/8x7+3/8
2019-05-05
人教版六年级上册数学P15页第3题计算下面各题：1/3x3/5+1……要求过程、答案、能简算的简算.
1/33/5+1
1/2+5/4x4/5
5/7-5/9x5/7
1/6x(5-2/3)
1-5/7x21/25
7/8x7+3/8
优质解答
1, 1/3×3/5+1
=1/5+1
=6/5
2, 1/2+5/4x4/5
=1/2+1
3/2
3, 5/7-5/9x5/7
=5/7-25/63
=45/63-25/63
=20/63
4, 1/6x(5-2/3)
=1/6x13/3
=13/18
5,1-5/7x21/25
=1-3/5
=2/5
6, 7/8x7+3/8
=49/8+3/8
=52/8
=13/2
1, 1/3×3/5+1
=1/5+1
=6/5
2, 1/2+5/4x4/5
=1/2+1
3/2
3, 5/7-5/9x5/7
=5/7-25/63
=45/63-25/63
=20/63
4, 1/6x(5-2/3)
=1/6x13/3
=13/18
5,1-5/7x21/25
=1-3/5
=2/5
6, 7/8x7+3/8
=49/8+3/8
=52/8
=13/2