小学二年级数学较复杂口算练习题(5)
奥数网
2016-08-05 17:24:52
4×6+6=
7×7-20=
69-8-40=
5×4-12=
2×5+3=
4×6+6=
7×7-20=
69-8-40=
5×4-12=
2×5+3=