题干
直接写得数。
13–8 =____ 17–3 =____22+5 =____60+23 –3=____
43+ 20=____7+60=____68– 6=____88– 50+30 =____
88–7 =____ 6+9 =____13－9=____75–60+70=____
90–20= ____ 50+48 =____ 74–40 =____78–8–30 =____
49+ 40=____15–8=____ 30+60 =____32+50–40 =____
答案(点此获取答案解析）
5,14,27,80,63,67,62,8,81,15,4,85,70,98,34,40,89,7,90,42
