①28+34=
②44+23=
③65-27=
④95-49-36=
⑤67-25+28=
⑥75-(27+16)=
①54-45=
②37+24=
③57-36=
④28+25-35 =
⑤81-(24-18)=
⑥96-33+17=
①53+ 26=
②49 + 34=
③78-26=
④90-27 =
⑤94-(36+22) =
⑥87 -48-25 =