\(435-167-89-435-89\\=(435-435)-(167+89+89)\\=-(256+89)\\=-345\)
\(435-167-89-435-89\\=(435-435)-(167+89+89)\\=-(256+89)\\=-345\)
435 - 167 - 89 - 435 - 89
(-67) +125 + (-33) + 75
bo dau ngoac roi tinh
(-7264) + (1543 + 7264)
(435 - 167 - 89) - (435 - 89)
TÍNH BẰNG CÁCH HỢP LÍ ☠
a) -3752-( 29-3632)-51
b) 4524-(12-3999)-(4524+3999)
c) (-116+124 )-(215-116+124)
d)(-435+167+89)-(-435+89)
3.tính nhanh
a)(1456+323)-1456
b)(-1999)-(-234-1999)
c)(116+124)+(215-116-124)
d)(435-167-89)-(435-89)
Tinh nhanh
a.(1456+23)-1456
b.(-1999)-(-234-1999)
c.(116+124)+(215-116-124)
d.(435-167-89)-(435-89)
(435 x 234 - 89) : (233 x 435 + 346)
258-[122-(-358+322)]
(435.167.89)-(435-89)
435+1000+( -435) + ( -100)
Bài 1: Bỏ dấu ngoặc rồi tính:
a) (167 + 35) + (134 - 167 - 35)
b) ( 243 - 231 + 57) - (243 - 231 + 27)
c) (89 - 76) + (76 - 89 + 28)
d) (243 + 46 - 345) - (243 - 345 + 54)