试题 试卷
题型：单选题 题类：常考题 难易度：容易
7的乘法口诀1820 8
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62+2= 38-6 = 80-8 = 53+10 = 45+54=
37+63 = 72-20 = 36-4= 74+12 = 83-80=
6元8角 –5元3角= 4元2角+3元7角=
20+7 = 30-20 = 90+9= 60-30 = 24+6 =
51+8= 7+83= 85-5 = 90-70= 45+20=
96-7 = 65+20= 39+8= 4+65=
18+50-7= 80-60+35= 90-（60+30）= 63-（76-70）=
试题篮
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