概要: 20-13= 12-9= 18-6= 14-8= 7+8= 18-14= 11-8= 8-7= 17+3= 1+3= 7-4= 2+5= 5-2= 14-3= 8+9= 13-1= 9+3= 7+12= 17-3= 20-19= 5-1=
一年级20以内口算题4,标签:一年级数学配套试卷大全,http://www.youer8.com20-13= 12-9= 18-6=
14-8= 7+8= 18-14=
11-8= 8-7= 17+3=
1+3= 7-4= 2+5=
5-2= 14-3= 8+9=
13-1= 9+3= 7+12=
17-3= 20-19= 5-1=
20-15= 19-18= 12+2=
15-5= 12-3= 6+4=
7+5= 19-8= 18-11=
19-13= 8+9= 10-4=
2+3= 3+1= 4+10=
7+6= 8+9= 3+15=