100以内两位数加减法填括号（2023-07-12）

100以内两位数加减法填括号（2023-07-12）：80-( )=55 11+( )=38 70+( )=99 ( )+19=49 ( )-33=52 ( )+65=79 40+( )=95 ( )+12=74 89-( )=68 ( )+11=35 73-( )=6 99-( )=42 ( )-61=29 13+( )=77 38+( )=68 ( )+11=48 64+( )=84 23+( )=99 ( )+57=79 ( )+14=28 ( )+23=56 88-( )=28 ( )+13=95 18+( )=87 73-( )=57 ( )-49=43 52+( )=67 42-( )=23 35+( )=77 ( )-69=11 ( )+59=98 38+( )=78 ( )+25=89 ( )-15=75 74-( )=12 59+( )=77 74-( )=52 ( )-45=21 9...