d)(-41).(59+2)+59.(41-2)
=-41.59-41.2+59.41-2.59=(59.41-41.59)- 2.(41+59)=0-200=-200
e)(-32).125.(-9).(-125)=(-2)^5.5^3.(-9).(-5)^3=(-2)^5.(-5)^5.(-9).5=10^5.(-45)=-4500000
g)19.25+9.95+38.15=19.5.5+.9.95+2.19.5.3=95.5+9.95+6.95=95.(5+9+6)=95.20=1900
tính nhanh:
a) -4.2.6.25.(-7).5
b) 47.69-31.(-47)
c) 16.(38-2)-38.(16-1)
d) (-41).(59+2)+59.(41-2)
e) A=19.25+9.95+38.15
f) B= (-32).125.(-9).(-25)
g) C=(-3879-3879-3879-3879).(-25)
h) D=369.(-2)-41.72
Bài 1: tính hợp lí
a)(-41).(59+2)+59.(41-2)
b)19.25+9.95+38.15
c)(-3879-3879-3879-3879).(-25)
d)369.(-2)-41.72
e)-54.72+54.(-28)
tính nhanh
a) A = 19.25+9.95+38.15
b) B = (-32).125.(=9).(-25)
c) C = (-3879-3879-3879-3879).(-25)
d) D = 369.(-2)-41.72
tính nhanh
a) A = 19.25+9.95+38.15
b) B = (-32).125.(=9).(-25)
c) C = (-3879-3879-3879-3879).(-25)
d) D = 369.(-2)-41.72
ai giải thì mk tick cho nha
tinh :
a,(-8).25 .(-2).4.(-5).125
/b,19.25+9.95+19.30/
c,12.(-78)-12.22-88.78-176/
d,2^60-2^59-2^58-......-2^1-2^0
giải hộ mình nha
1
a, 16 . ( 38 - 2 ) - 38 . ( 16 - 1 )
b, ( - 41 ) . ( 59 + 2 ) + 59 . ( 41 - 2 )
c, 19 . 25 + 9 . 95 + 38 . 15
d,( - 32 ) . 125 . ( -9 ) . ( - 25 )
trả lời nhanh nha
4. Tính: (tính nhanh nếu có thể)
a) 125. (–24) + 24. 225
b) 26. (–125) – 125. (–36)
c) 29. (–17) + 27.( –29) + (–14).( –29)
d) 17.( –37) – 23.37 – 46.( –37)
e) 16.(38 – 2) – 38.(16 – 1)
f) (–41).(59 + 2) + 59.(41 – 2)
a)-524 . [(23+(-45)]+524.(-45+123)
b)47.69-31.(-47)
c)16.(38-2)-38.(16-1)
d) (-41).(59+2)+59.(41-2)
e) 125.(-8).(-25).9.4.100^0 :3
) 47.69-31.(-47)
b) 16.( 38 -2 ) - 38.( 16 -1 )
c) (-41).( 59+2 ) + 59 .( 41 -2 )
d)125.(-8).(-25).9.4.1000 :3
