1.589-23×18+74 2.(67-686÷98)×20 3.275-(60+280÷70) 4.570-360÷90×18 5.(123-88)×(73+17) 6.1200÷[ 360÷(3×6)+4 ] 7.630÷(21-12)×16 10.186-900÷(100-25) 13.18×(400-120×2) 12 16. (72-4)×(6÷3) 4-3) 8. (420-42×7)÷63 9.530+54×4÷24 11.420÷(205-198)×4 12.450÷2×(16+9) 14.75+360÷(20-5) 15.(280+80÷4)× 17.(124-85)×12÷26 18.28+(32÷ 19.96÷12+4×2 20.96÷(12+4)×2 21.96÷[(12+4)×2] 22.360÷(70-4×16) 25.720÷(15-3×2) 26.3889 28.906×(65+15)-2010 31.(80-14)÷6+1 32.720-720 34.240+480÷30×2 35.225-10 37.164-13×5+85 38.42 23.158×[(27+54)÷9] 24.-(108-931)×5 27.(800÷5×(121÷11) ÷15-10 33. (360-144)×(6+13) 36.(120×15÷5+136 39.800-981(432-24×10)÷6 +200÷50)×3 (10+120÷5)×3 ÷24×3 ×2+120)÷9 ÷9+20 29.1250 30. 40.392÷(45-38)-25 41.(26+34)×78-2568 42.150-90÷3+66 43.(43+32)÷(357-352) 44.138+(27+48)÷25 45.(280+80÷4)×12 46. (124-85)×12÷26 47.28+(32÷4-3) 48.18×(400-120×2) 49.75+360÷(20-5) 50.75+360÷(20-5) 本文来源:https://www.wddqw.com/doc/a4f056f7f342336c1eb91a37f111f18582d00c0d.html