题干
口算
8+3=____ 15+5=____6+7= ____18-8=____17-4=____
0+17=____11+2=____16+4=____14+4=____9-6= ____
16-0=____13+6=____8+8=____9+9=____19-2=____
16-5=____12+8=____13+3=____13+7=____17-7=____
15+3=____ 8+9=____11+4=____7+7=____
答案(点此获取答案解析）
11,20,13,10,13,17,13,20,18,3,16,19,16,18,17,11,20,16,20,10,18,17,15,14
