学一年级数学（下）口算题(一)
|
29-11=
|
16- 4=
|
89-24=
|
29- 8=
|
98-77=
|
|
52-50=
|
24-10=
|
10+20=
|
14+20=
|
31-4=
|
|
17- 7=
|
19-10=
|
98-80=
|
25-4=
|
99-20=
|