a,,369-(206-15)-(-206+369) b,345-150:[(3^3-24)^2-(-21)]+2016^0 c,(-125).32.(-17).(-1)^100 d,127-45-(-273)+1145

2 bình luận về “a,,369-(206-15)-(-206+369) b,345-150:[(3^3-24)^2-(-21)]+2016^0 c,(-125).32.(-17).(-1)^100 d,127-45-(-273)+1145”

1. a)369-(206-15)-(-206+369)

   =369-206+15+206-369

   =(369-369)+(206-206)+15

   =0+0+15

   =15

   b)345-150:[(3^3-24)^2-(-21)]+2016^0

   =345-150:[(27-24)^2+21]+1

   =345+1-150:(3^2+21)

   =346-150:(9+21)

   =346-150:30

   =346-5

   =341

   c)(-125).32.(-17).(-1)^100

   =(-125).8.4.(-17).1

   =[(-125).8].[4.(-17)]

   =(-1000).(-68)

   =68000

   d)127-45-(-273)+1145

   =127-45+273+1145

   =(127+273)+(1145-45)

   =400+1100

   =1500

   Trả lời
2. a)369-(206-15)-(-206+369)

   =369-206+15+206-369

   =(369-369)+(-206+206)+15

   =15

   b)345-150:[(3^3-24)^2-(-21)]+2016^0

   =345-150:[(27-24)^2+21]+1

   =346-150:[9+21]

   =346-150:30

   =346-5

   =341

   c)(-125).32.(-17).(-1)^100

   =(-125).32.(-17).1

   =(-4000).(-17)

   =68000

   d)127-45-(-273)+1145

   =126-45+273+1145

   =(-45+1145)+126+273

   =1100+126+273

   =1499

    

   Trả lời