小学五年级下册数学口算题60道，帮帮忙今天就要！！！！

1.45+15×6= 2.250÷5×8= 3.6×5÷2×4= 4.30×3+8= 5.400÷4+20×5= 6.10+12÷3+20= 7.(80÷20+80)÷4= 8.70+(100-10×5)= 9.360÷40= 10.40×20= 11.80-25= 12.70+45= 13.90×2= 14.16×6= 15.300×6= 16.540÷9= 17.30×20= 18.400÷4= 19.350-