二年级数学口算能力提升练习题(1)
奥数网
2016-08-05 17:14:32
4×3+8=
100-90+6=
2×2×8=
1×6+12=
5×5-20=
4×3+8=
100-90+6=
2×2×8=
1×6+12=
5×5-20=