一、脱式结算
(1)13×3+20= (2)45÷9+37= (3)100-9×3= (4)80+5×4=
(5)30-36÷4= (6)42÷(18÷3)= (7)84-(45+5)= (8)6×(35÷5)=
(9)63-40+25= (10)35+4×8= (11)27+81÷9= (12)3×7+50=
(13)6×8-24= (14)36÷6×4= (15)49÷7+63= (16)(24+6)÷5=
(17)9×8+12= (18)20+24×2= (19)72÷8+30= (20)59-4×7=
(21)56-8×3= (22)21+6×3= (23)15-40÷5= (24)58+34-45=
(25)32+6×4= (26)90-64÷8= (27)30-5×4= (28)6×4-20=
(29)14-6×2= (30)8+5×3= (31)(90-60)÷6= (32)36÷(3×3)=
(33)8×(7-4)= (34)16÷8×7= (35)80-5×8= (36)9×3+20=
(37)(48-39)×8= (38)9×7+24= (39)48+81÷9= (40)18÷2+37=
(41)94-7×9= (42)87-63+20= (43)12+4×3= (44)81÷9÷3=
(45)9×3+4= (46)24÷6×2= (47)3×9-20=