试题 试卷
题型:填空题 题类:常考题 难易度:容易
7的乘法口诀1815 9
七四十二
4 × 1 = 3 × 2 = 6 × 2 = 1 × 8 =
4 + 1 = 3 + 2 = 6 + 2 = 1 + 8 =
28-7= 5×8 = 28-16 = 6×4 = 50-6 =
45+7 = 22+60= 6×7 = 7×8-8= 5×5+6=
试题篮