200+300÷5 12×68÷4 33×24-19
50.75-(4.75+0.88) 35×102 66-42÷7×6
33×4×25 15.09+21.3+4.91+7.7 840÷[25×(81-77)]
22×45÷6 (502+128)÷5 800-16×34