tính nhanh
446-(+650-554)
bai 1:tính hop li neu co the
a)-567-(-113)+(-113+567)-2009
b)(-137)+(+52).(-137)+(-137).(+47)
c)15.(16-222)-16.(15-222)
d)446-(+650-554)
bai 2:tìm cac so nguyen a va b biet b.a=16
bai 3:tich sau day la so am hay so duong?Giai thích
M=(-14).(-16).(-18).(-20).(-22).....(-100)
AI LAM DUOC CA BA BAI DUNG VA NHANH NHAT SE DUOC 3 LAN TICK !
CHUC MAY MAN
(-456)+(-554)+1000
tim bcnn caau 554 va757
554-455
688-957
x-96=(446-x)-150
Tìm ƯCLN ( 562 , 446 , 123 )
446-9.74 = ?
a,x-280:35=554
b,x+(5÷3)=500
c,390:(5x-5)=39
d,34x-14x=200