- =
95-53=
65-3639 45-2620 44-1530
74-5420 95-6630 33-1415
①79–9=
②63+30=
③86–53=
④54+5=
⑤99–96=
⑥25+52=
A.丁丁 B.佳佳 C.宁宁
和:差: