Tính giá trị biểu thức :
1,8*2,6-3,14*1,4+1,52*2,5
4,3*(4,75-2,75):0,75
tính giá trị biểu thức
1,8 x 2,6 - 3,14 x 1,4 + 1,52 x 2,5
=
4,3 x ( 4,75 - 2,25 ) : 0,5
=
1.8 x 2,6 - 3,14 x 1,4 + 1,52 x 2,5
=4,68 - 4,396 + 3,8
=4,084
\(1,8\times2,6+3,14\times1,4+1,52\times2,5.\)
\(=4,68+4,396+3,8\)
\(=12,876\)
tính giá tri cua bieu thuc: 1,8* 2,6- 3,14 *1,4+ 1,52* 2,5
4,3* (4,75- 2,25 ):0,5
minh dang can gap giup minh nhe cam on
1,8 x 2,6 - 3,14 x 1,4 + 1,52 x 2,5 =
cac bn giúp mk vs nha cảm ơn cac bn nhìu >_<
1,8 x 2,6 - 3,14 x 1,4 + 1,52 x 2,5
= 4,68 - 4,396 + 3,8
= 0,284 + 3,8
= 4,084.
tk nha !
Tính giá trị biểu thức :
6,75 + 2,75 x 1,4 -7,37 = ............................................................
= ............................................................
= ............................................................
= 6,75 + 3,85 - 7,37
= 10,6 - 7,37
= 3,23
tính giá trị biểu thức bằng cách nhanh nhất
(2000.7,5+2012:3) . (21-3,5.0,25).(11,2-10-1,2).(3,75-0,75)/2011+3,14
tính nhanh giá trị của biểu thức
\(P=\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
\(P=\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)\(=\frac{\frac{3}{4}-\frac{3}{5}+\frac{3}{7}+\frac{3}{13}}{\frac{11}{4}-\frac{11}{5}+\frac{11}{7}+\frac{11}{13}}\)\(=\frac{3.\left(\frac{1}{4}-\frac{1}{5}+\frac{1}{7}+\frac{1}{13}\right)}{11.\left(\frac{1}{4}-\frac{1}{5}+\frac{1}{7}+\frac{1}{13}\right)}\)\(=\frac{3}{11}\)
Tính nhanh giá trị của biểu thức sau:
\(P=\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
\(P=\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
\(P=\frac{\frac{3}{4}-\frac{3}{5}+\frac{3}{7}+\frac{3}{13}}{\frac{11}{4}-\frac{11}{5}+\frac{11}{7}+\frac{11}{13}}\)
\(P=\frac{3.\left(\frac{1}{4}-\frac{1}{5}+\frac{1}{7}+\frac{1}{13}\right)}{11.\left(\frac{1}{4}-\frac{1}{5}+\frac{1}{7}-\frac{1}{13}\right)}\)
\(P=\frac{3}{11}\)
\(P=\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
\(P=\frac{0,15+3\times\left(\frac{1}{7}+\frac{1}{13}\right)}{0,55+11\times\left(\frac{1}{7}+\frac{1}{13}\right)}\)
\(P=\frac{0,05\times3+3\times\left(\frac{1}{7}+\frac{1}{13}\right)}{0,05\times11+11\times\left(\frac{1}{7}+\frac{1}{13}\right)}\)
\(P=\frac{3\times\left(0,05+\frac{1}{7}+\frac{1}{13}\right)}{11\times\left(0,05+\frac{1}{7}+\frac{1}{13}\right)}\)
\(P=\frac{3}{11}\)
tính giá trị biểu thức sau bằng cách nhanh nhất :
(1,1,+1,2*1,3+1,4**1,5+1,6*1,7+1,8*1,9)*(1,25-0,25*5)
\(\left(1,1+1,2.1,3+1,4.1,5+1,6.1,7+1,8.1,9\right).\left(1,25-0,25.5\right)\)
\(=\left(1,1+1,2.1,3+1,4.1,5+1,6.1,7+1,8.1,9\right).\left(1,25-1,25\right)\)
\(=\left(1,1+1,2.1,3+1,4.1,5+1,6.1,7+1,8.1,9\right).0\)
\(=0\)
Tính nhanh giá trị của biểu thức sau:
P=\(\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
Ta có: \(A=\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{3}}=\frac{\frac{3}{4}-\frac{3}{5}+\frac{3}{7}+\frac{3}{13}}{\frac{11}{4}-\frac{11}{5}+\frac{11}{7}+\frac{11}{3}}=\frac{3\left(\frac{1}{4}-\frac{1}{5}+\frac{1}{7}+\frac{1}{3}\right)}{11\left(\frac{1}{4}-\frac{1}{5}+\frac{1}{7}+\frac{1}{3}\right)}=\frac{3}{11}\)
\(P=\frac{0.75-0.6+\frac{3}{7}+\frac{3}{13}}{2.75-2.2+\frac{11}{7}+\frac{11}{3}}\)
\(P=\frac{\frac{3}{4}-\frac{3}{5}+\frac{3}{7}+\frac{3}{13}}{\frac{11}{4}-\frac{11}{5}+\frac{11}{7}+\frac{11}{13}}\)
\(P=\frac{3\left(\frac{1}{4}-\frac{1}{5}+\frac{1}{7}+\frac{1}{15}\right)}{11\left(\frac{1}{4}-\frac{1}{5}+\frac{1}{7}+\frac{1}{15}\right)}\)
\(P=\frac{3}{11}\)