①58+18=
②67-17=
③80-45=
④76-49+19=
⑤19+36+45=
⑥100-42-29=
①32+27+22=
②46+44﹣28=
③98﹣43﹣16=
①26+68=
②73-6=
③91-27=
④8+45=