Tính hợp lí
\(\frac{636363.37-373737.63}{1+2+3+.......+2006}\)
Thực hiện phép tính bằng cách hợp lí
\(A=\frac{636363.37-373737.63}{1+2+3+......+2006}\)
VÌ 636363 NHÂN 37 - 373737 NHÂN 63 = 0 NÊN
0/1+2+...+2006=0
VẬY A= 0
THỰC HIỆN PHÉP TÍNH BẰNG CÁCH HỢP LÝ
A= 636363.37-373737.63/1+2+3+....+2006
Tính giá trị biểu thức sau:
\(\frac{636363.37-373737.63}{1+2+3+....+2006}\)
\(\frac{636363.37-373737.63}{1+2+3+...+2006}\)
\(=\frac{63.10101.37-37.10101.63}{1+2+3+...+2006}\)
\(=\frac{0}{1+2+3+...+2006}\)
\(=0\)
\(\frac{636363.37-373737.63}{1+2+3+...+2006}\)
\(\Rightarrow\)\(\frac{63.10101.37-37.10101.63}{1+2+3+...+2006}\)
\(\Rightarrow\frac{63.37-37.63}{1+2+3+...+2006}\)
\(\Rightarrow\frac{2331-2331}{1+2+3+...+2006}\)
\(\Rightarrow\frac{0}{1+2+3+...+2006}\)
\(=0\)
Tính 636363.37 - 373737.63 / 1+2+3+4...+2006
kết quả = 0 nha bn, vì tử số có kết quả bằng 0 ^^
\(\frac{636363.37-373737.63}{1+2+3+4+...+2006}=\frac{63.10101.37-37.10101.63}{1+2+3+4+...+2006}=\frac{0}{1+2+3+4+...+2006}=0\)
thực hiên phép tính bằng cách hợp lý :
A = \(\frac{636363.37-373737.63}{1+2+3+......+2006}\)
thực hiện phép tính bằng cách hợp lí ?
\(B=1\frac{6}{41}.\left(\frac{12+\frac{12}{19}-\frac{12}{37}-\frac{12}{53}}{3+\frac{1}{3}-\frac{3}{37}-\frac{3}{53}}:\frac{4+\frac{4}{17}+\frac{4}{19}+\frac{4}{2006}}{5+\frac{5}{17}+\frac{5}{19}+\frac{5}{2006}}\right).\frac{124242423}{237373735}\)
\(\frac{636363.37-373737.63}{1+2+3+....+2006}\)
B=47/41.[12.(1+1/19-1/37-1/53)/3.(1+1/19-1/37-1/53):4.(1+1/17+1/19+1/2006)/5.(1+1/17+1/19+1/2006)].123/235
=47/41.[4:4/5].123/235
=47/41.5.123/235=3
C=63.10101.37-37.10101.63/1+2+3+...+2006
=0/1+2+3+...+2006=0
CẬU XEM LẠI CHO MÌNH NHA!
\(\frac{636363.37-373737.63}{1+2+3+...+2006}=\frac{63.10101.37-37.10101.63}{1+2+3+...+2006}=\frac{0}{1+2+3+...+2006}=0\)
Mình đảm bảo đúng 100%
Đáp án là 0
Bạn đi làm từng bước
~~~~~~~~~~~~ Chào bạn ~~~~~~~~~~~~~~~~~
\(Tính:\)
\(A=\frac{636363.37-373737.63}{1+2+3+...+2006}\)
\(A=\frac{636363.37-373737.63}{1+2+3+...+2006}=\frac{63.10101.37-37.10101.63}{1+2+3+...+2006}=\frac{0}{1+2+3+...+2006}=0\)
Tương tự, câu em vừa hỏi, tử số = 0 nên A = 0
Tính\(P=\dfrac{636363.37-373737.63}{1+2+3+...+2006}\)
\(P=\dfrac{636363.37-373737.63}{1+2+3+...+2006}\)
Cho \(A=636363.37-373737.63\)
\(A=10101.63.37-10101.37.63\)
\(\Rightarrow A=0\)
Cho \(B=1+2+3+...+2006\)
\(B\) có số số: \(\left(2006-1\right):1+1=2006\) (số)
\(B\) có số cặp: \(2006:2=1003\) (cặp)
\(B=\left(2006+1\right).1003=2013021\)
\(\Rightarrow P=\dfrac{A}{B}=\dfrac{0}{2013021}=0\)
Tính: \(A=\frac{636363.37-373737.63}{1+2+3+...+2006}\)
\(B=1\frac{6}{41}.\left(\frac{12+\frac{12}{19}-\frac{12}{37}-\frac{12}{53}}{3+\frac{1}{3}-\frac{3}{37}-\frac{3}{53}}:\frac{4+\frac{4}{17}+\frac{4}{19}+\frac{4}{2006}}{5+\frac{5}{17}+\frac{5}{19}+\frac{5}{2006}}\right).\frac{124242423}{237373735}\)
\(A=\frac{636363.37-373737.63}{1+2+3+...+2006}\)
\(A=\frac{63.10101.37-37.10101.63}{1+2+3+...+2006}\)
\(A=0\)
\(B=1\frac{6}{41}.\left(\frac{12+\frac{12}{19}-\frac{12}{37}-\frac{12}{53}}{3+\frac{3}{19}-\frac{3}{37}-\frac{3}{53}}:\frac{4+\frac{4}{17}+\frac{4}{19}+\frac{4}{2006}}{5+\frac{5}{17}+\frac{5}{19}+\frac{5}{2006}}\right).\frac{124242423}{237373735}\)
\(B=\frac{47}{41}.\left[\frac{4.\left(3+\frac{3}{19}-\frac{3}{37}-\frac{3}{53}\right)}{1.\left(3+\frac{3}{19}-\frac{3}{37}-\frac{3}{53}\right)}:\frac{4.\left(1+\frac{1}{17}+\frac{1}{19}+\frac{1}{2006}\right)}{5.\left(1+\frac{1}{17}+\frac{1}{19}+\frac{1}{2006}\right)}\right].\frac{124242423}{237373735}\)
\(B=\frac{47}{41}.\left(4:\frac{4}{5}\right).\frac{124242423}{237373735}\)
\(B=\frac{47}{41}.5.\frac{124242423}{237373735}\)
\(B=\frac{47.5.124242423}{41.237373735}\)
\(B=\frac{29196969405}{9732323135}\)
Ủng hộ mk nha !!! ^_^
a) \(A=\frac{636363.37-373737.63}{1+2+3+...+2006}\)
\(A=\frac{10101.63.37-10101.37.63}{1+2+3+...+2006}\)
\(A=\frac{0}{1+2+3+...+2006}\)
\(A=0\)
b) \(B=1\frac{6}{41}\left(\frac{12+\frac{12}{19}-\frac{12}{37}-\frac{12}{53}}{3+\frac{3}{19}-\frac{3}{37}-\frac{3}{53}}.\frac{4+\frac{4}{17}+\frac{4}{19}+\frac{4}{2006}}{5+\frac{5}{17}+\frac{5}{19}+\frac{5}{2006}}\right).\frac{124242423}{237373735}\)
\(B=\frac{47}{41}.\frac{12}{3}.\left(\frac{1+\frac{1}{19}-\frac{1}{37}-\frac{1}{53}}{1+\frac{1}{19}-\frac{1}{37}-\frac{1}{53}}\right).\frac{4}{5}.\left(\frac{1+\frac{1}{17}+\frac{1}{19}+\frac{1}{2006}}{1+\frac{1}{17}+\frac{1}{19}+\frac{1}{2006}}\right).\frac{123}{235}\)
\(B=\frac{47.4.4.123}{41.5.235}\)
\(B=\frac{47.4.4.41.3}{41.5.47.5}\)
\(B=\frac{4.4.3}{5.5}\)
\(B=\frac{48}{25}\)