小学二年级数学四则运算混合口算练习(1)
奥数网
2016-09-27 14:38:54
18-3×4=
4×6-23=
86-16-6=
6×6-13=
4×6+6=
7×7-20=
18-3×4=
4×6-23=
86-16-6=
6×6-13=
4×6+6=
7×7-20=