二年级数学上册混合口算练习题 6×5-12= 7×5-12= 1×8+8×3= 18+2×9= 7×5+14= 68-7×5= 9×5-6×7= 8+7×7= 7×5-13= 7×8-12= 3×4-8= 2×4-3= 6×9-17= 3×1+6×7= 4×3+13= 6×5+13= 7×6+8= 85-6×9= 6×5-25= 4×4+5×7= 87-9×7= 9×7-8×6= 9×3-14= 6×3+18= 18+9×3= 29+60-17= 56+4×7= 7×6-36= 6×5+29= 5+28-13= 39+6×2= 2×8+79=
所需点数：0
