①43+56=
②47-27=
③68+19=
④90-72=
①56-13=
②45+12=
③78-8=
④68-25=
⑤71-40=
⑥7+52=
①36+44=
②71-35=
③55-26=
④87-54+19=
⑤46+52-16=
⑥95-56-28=