tinh hop li(-167).83+167
xin dap an: tinh hop li
a(273 - 51 ) - [ 73 - (-149) ]
b130 - [ 13 . 3 -(19- 16)2].
thuc hien cac phep tinh sau bang cach hop li nhat
a] 38+41+117+159+62
b] 73+86+968+914+3032
c]341.67+34116+658+83
d]4253+47156-47114
tinh bang cach hop li
(-8).25.(-375).(-4).125
(-19).8+(-19).(-3)
(-137)+76.(-137)+(-137).23
24.(-21)+(-121).(-24)
thuc hien phep tinh sau 1 cach hop li
9764/36615+36.85.20/25.84.34+22/10+3 19/133(la hon so)
b, 4/6+4/30+4/70+..+4/2.99.101
thuc hien phep tinh
a)-/12-14/-/98-15+2/-14
b)(-24) -(12-19)-/15-12-7/
2) tinh hop li
a)5-(1997-2005)+1997
b)1579-(53+1679)-(-53)
c)-48725-(357-48725)+300
d)4567+(1234-4567)-4
de bai tinh gia tri bieu thuc sau mot cach hop li (ghi ro tinh chat da ap dung)
A=6/19 . - 7/11 + 6/19 . -4/11 + -13/19
B=5/7 . -4/13 +5/7 .7/13 - 5/13 . 3/7
lam het mik cho 1 like nha ai dung mik se kb va cho like nha cac ban
Tinh nhanh:11+12+13+14+15+16+17+18+19+89+88+87+86+85+84+83+83+82