试题 试卷
题型:填空题 题类:常考题 难易度:容易
万以内加、减法口算 2826 10
260-60=
260-200=
40+500=
900+300=
30: 20+10 50-30 50-20 20+3
50: 50-10 20+30 56-6 70-50
40: 44-40 44-4 40+0 40+40
6: 56-6 66-6 66-60 26-20
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