\(\dfrac{4}{3}-\dfrac{1}{3}\)x\(\dfrac{5}{2}=\dfrac{4}{3}-\dfrac{5}{6}=\dfrac{1}{2}\)
=\(\dfrac{2}{3}\)*\(\dfrac{5}{2}\)=\(\dfrac{5}{3}\)
\(\dfrac{4}{3}-\dfrac{1}{3}\)x\(\dfrac{5}{2}=\dfrac{4}{3}-\dfrac{5}{6}=\dfrac{1}{2}\)
=\(\dfrac{2}{3}\)*\(\dfrac{5}{2}\)=\(\dfrac{5}{3}\)
Tính giá trị biểu thức
2/5+3/4-4/7=
7/9:2/3x5/4=
4/5x(7/10-1/2)=
Tính nhanh:
a)1/3+2/3+5/12+4/3+1/12 b)3x5/6+5/6+2x5/6
c)___112x113+112x113_________
224x226+224x226
a) 1+4/3
b) 5/9 : 2/3
c ) 4/3-1/3x5/2
d) ( 3/2-3/8):1/2
e) 15/16 : 3/8 x 3/4
f) 7/19 x 1/3 x 7/19 x 2/3
g) 3/5x 8/27 x 25/3
h) 1/5 + 4/11 + 4/5 + 7/11
a. 1 + 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256
b. 3/1x4 + 3/2x5 + 3/3x6 + 3/4x7 + 1/5x8
c. 2/1x3 + 2/3x5 + 2/5x7 + ............... + 2/2001x2003 + 2/2003x2005
Các bn vui lòng giải lời giải nha
( 1/3x5 + 1/5x7 + 1/7x 9 + 1/9x11 + 1/11x13 ) x X= 2/3
a,\((\) 1\(-\) \(\dfrac{1}{3}\)\()\)x\((\)1\(-\)\(\dfrac{2}{5}\)\()\)x\((\)1\(-\)\(\dfrac{2}{7}\)\()\)x\((\)1\(-\)\(\dfrac{2}{9}\)\()\)
b,\(\dfrac{1}{1x3}\) + \(\dfrac{1}{3x5}\) + \(\dfrac{1}{5x7}\) + \(\dfrac{1}{7x9}\)
tính:
4/6+7/3x5/2
day du tick
bài 4:tính
a).5/6+13/6
b).9/16-3/8
c).2/9x5/3
d).4/6+7/3x5/2
ai làm đầy đủ phép tính và đáp số 4 câu mik tick 2 luôn !!!
giúp đi @@
Tính thuận tiện:
a. 2345-2345:24:4 b. 1000-1000:8:125
123x25+123x74+123 2/1x3 + 2/3x5 + 2/5x7 + 2/7x9