①32-23+51 ②81÷9+42 ③56-7×4
④7×(45÷9) ⑤8×(76-67) ⑥(37+26) ÷7
①53-24+38
②36+6×8
③(82-18)÷8
④90-45+30
①1204+879+121
②74×60%+×25+0.6
③1.2÷×(0.6﹣)
④×[﹣(+)]