Tính nhanh A bằng 24.47 trừ 23/24 cộng 47 trừ 23
Tính A= 24.47-23/24+47-23
Tính nhanh:
A=24.47-23/24+47-23 . (3+3/7-3/11+3/1001-3/13)/(9/1001-9/13+9/7-9/11+9)
\(\frac{24.47-23}{24+47-23}\)
giải hộ với
Tính nhanh :
\(A=\dfrac{24.47-23}{24+47-23}.\dfrac{3+\dfrac{3}{7}-\dfrac{3}{11}+\dfrac{3}{1001}-\dfrac{3}{13}}{\dfrac{9}{1001}-\dfrac{9}{13}+\dfrac{9}{7}-\dfrac{9}{11}+9}\)
A=(24.47-23)/(24+47-23) . [3(1+1/7-1/11-1/13+1/1001)]/[9(1+1/7-1/11-1/13+1/1001)]
=1105/48 . 3/9 =1105/144
Tính nhanh :
\(A=\frac{24.47-23}{24+47-23}.\frac{3+\frac{3}{7}+\frac{3}{11}+\frac{3}{1001}-\frac{3}{13}}{\frac{9}{1001}-\frac{9}{13}+\frac{9}{7}+9}\)
P/s: Giúp đê
\(A=\frac{24.47-23}{24+47-23}.\frac{3+\frac{3}{7}+\frac{3}{11}-\frac{3}{1001}+\frac{3}{13}}{\frac{9}{1001}-\frac{9}{13}+\frac{9}{7}+9}\)
\(A=\frac{1105}{48}.\frac{3.\left(1+\frac{1}{7}+\frac{1}{11}-\frac{1}{1001}+\frac{1}{13}\right)}{9.\left(\frac{1}{1001}-\frac{1}{11}+\frac{1}{7}+1\right)}\)
\(A=\frac{1105}{48}.\frac{3.\frac{1311}{1001}}{9.\frac{1054}{1001}}\)
\(A=\frac{1105}{48}.\frac{3933}{1001}:\frac{9468}{1001}\)
\(A=\frac{1105}{48}.\frac{437}{1052}\)
\(A\approx9,56\)
Chú ý : Dấu xấp xỉ \(\approx\)
Tính A=24.47-23/24+47.23
A = \(\frac{24.47-23}{24+47.23}=\frac{47\left(23+1\right)-23}{24+47.23}=\frac{47.23+47-23}{24+47.23}=\frac{47.23+24}{24+47.23}=1\)
A=\(\frac{24.47-23}{24+47-23}.\frac{3+\frac{3}{7}-\frac{3}{11}+\frac{3}{1001}-\frac{3}{13}}{\frac{9}{1001}-\frac{9}{13}+\frac{9}{7}-\frac{9}{11}+9}\)
Hỏi A=?
tính nhanh 58 nhân 75 cộng 58 nhân 50 nhân 25 4 nhân 22 nhân 87 cộng 11 nhân 8 nhân 36 trừ 2 nhân 44 nhân 23
. là dấu nhân
\(58.75+58.50.25\)
\(=58.75+58.1250\)
\(=58.\left(75+1250\right)\)
\(=58.1325=76850\)
( 5 trừ 23 phần 7 ) nhân 63 phần 24 cộng 11 phần 9 chia 2 phần 3
\(\left(5-\frac{23}{7}\right)×\frac{63}{24}+\frac{11}{9}:\frac{2}{3}\)
\(=\frac{12}{7}×\frac{63}{24}+\frac{11}{9}:\frac{2}{3}\)
\(=\frac{9}{2}+\frac{11}{9}:\frac{2}{3}\)
\(=\frac{9}{2}+\frac{11}{6}\)
\(=\frac{19}{3}\)
Bằng 19/3 nha
chúc bn hok tốt
\(\left(5-\frac{23}{7}\right)\times\frac{63}{24}+\frac{11}{9}:\frac{2}{3}\)
\(=\frac{12}{7}\times\frac{63}{24}+\frac{11}{6}\)
\(=\frac{9}{2}+\frac{11}{6}\)
\(=\frac{19}{3}\)
Học tốt