tinh nhanh nha cac bn giup gium mink
a) -(315.4+275)+4.315-(10-275)
b) [(-2,5.0,375.0,4]-[0,125.3,25.(-8)]
Tính nhanh:
a) [(-6,8)+(-56,9)]+[(2,8)+(5,9)]
b) -(315.4+275)+4.315-(10-275)
c)[ (-2,5).0,375.0,4]-[0,125.3,25.(-8)]
Gía trị của biểu thức:
-(315.4 +275) +4.315- (10-275)
1. Gía trị của biểu thức:
-(315.4 +275)+4.315-(10-275)
bỏ dấu ngoặc rồi tính
\(A=\left(37,1-4,5\right)-\left(-4,5+37,1\right)\))
\(B=-\left(315.4+275\right)+4.315-\left(10-275\right)\)
\(C=-\left(\frac{3}{7}+\frac{3}{8}\right)-\left(-\frac{3}{8}+\frac{4}{7}\right)\)
\(A=\left(37,1-4,5\right)-\left(-4,5+37,1\right)\)
\(=37,1-4,5+4,5-37,1\)
\(=37,1-37,1-4,5+4,5\)
\(=0.\)
\(B=-\left(315.4+275\right)+4.315-\left(10-275\right)\)
\(=-315.4-275+4.315-10+275\)
\(=-315.5+4.315-275+275-10\)
\(=0+0-10=-10.\)
\(C=-\left(\frac{3}{7}+\frac{3}{8}\right)-\left(-\frac{3}{8}+\frac{4}{7}\right)\)
\(=-\frac{3}{7}-\frac{3}{8}+\frac{3}{8}-\frac{4}{7}\)
\(=-\frac{3}{7}-\frac{4}{7}-\frac{3}{8}+\frac{3}{8}\)
\(=-1+0=-1.\)
A=37,1 - 4,5 + 4,5 - 37,1
A=(37,1 - 37,10) + ( 4,5 - 4,5 )
A = 0 + 0 = 0
B= -315.4 - 275 + 4.315 - 10 + 275
B=(-315.4 + 4.315) + ( 275-275) - 10
B= 0 + 0 - 10 = -10
C= -3/7 - 3/8 + 3/8 - 4/7
C = ( -3/7-4/7) + ( 3/8 - 3/8)
C=-7/7 + 0 = -7/7 = -1
Tính nhanh:
-(315.4 + 275) + 4.135 - (10 -275)
-(315.4+275)+4.135-(10-275)
=-1535+540+265
=-730
bai 1 tinh nhanh
a) (-2,5.0,375.0,4)-[0,125.3,25.(-8)]
b) [(-30,27).0,5+(-9,37).0,5]:[3,116.0,8-(-1,884).0,8]
( 2,5.0,375.0,4 ) -- ( 0,125.3,25. (-8) )
bằng câu trả lời
\(\left(2,5.0,375.0,4\right)-\left(0,125.3,15.\left(-8\right)\right)\)
\(=\left(1.0,375\right)-\left[\left(-1\right).3,15\right]\)
\(=0,375-\left(-3,15\right)\)
\(=0,375+3,15\)
\(=3,525\)
dung cac chu so 4,5,6,7,8,9 cac bn hay lap giup mk 4 bieu thuc co gia tri bang 45 ?!? "=.=
lm nhanh gium mk nha T.T sap dj hoc roi .... mk tk cho
cac ban tinh gium minh diem thi voi nha
45' :9
Mieng:8
15':10
thi hoc ki:10
tinh ho minh diem thi nha
THANK YOU VERY MUCH