人教版六年级下册数学书第77页上面做一做答案
时间: 12-17
目录
1第77页上面做一做答案
4×2/7+4×5/7
=4×(2/7+5/7)
=4
9/7-4/9-5/9
=9/7-(4/9+5/9)
=2/7
(1/3-1/5)×45
=1/3×45-1/5×45
=6
1第77页上面做一做答案
4×2/7+4×5/7
=4×(2/7+5/7)
=4
9/7-4/9-5/9
=9/7-(4/9+5/9)
=2/7
(1/3-1/5)×45
=1/3×45-1/5×45
=6