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\(^{16.48+8.2.24+16.8+2.10.2.8}\)
\(=16.48+16.24+16.8+20.16\)
\(=16.\left(48+24+8+20\right)\)
\(=16.100\)
\(=1600\)
16 x 48 + 8 x 2 x 24 + 16 x 8 + 2 x 10 x 2 x 8
= 16 x 48 + 16 x 24 + 16 x 8 + 16 x 20
= 16 x (48 + 24 + 8 + 20)
= 16 x 100 = 1600
\(\frac{1}{2}+\frac{2}{4}+\frac{3}{6}+\frac{4}{8}+\frac{5}{10}+\frac{6}{12}+\frac{7}{14}+\frac{8}{16}+\frac{9}{18}+\frac{10}{20}\)
\(=\frac{1}{2}+\frac{1}{2}+\frac{1}{2}+\frac{1}{2}+\frac{1}{2}+\frac{1}{2}+\frac{1}{2}+\frac{1}{2}+\frac{1}{2}+\frac{1}{2}\)
\(=\frac{1}{2}\times10\)
\(=\frac{10}{2}\)
\(=5\)
\(\frac{1}{2}\)+ \(\frac{2}{4}\)+ \(\frac{3}{6}\)+ \(\frac{4}{8}\)+ \(\frac{5}{10}\)+ \(\frac{6}{12}\)+ \(\frac{7}{14}\)+ \(\frac{8}{16}\)+ \(\frac{9}{18}\)+ \(\frac{10}{20}\)
= \(\frac{1}{2}\)+ \(\frac{1}{2}\)+ \(\frac{1}{2}\)+ \(\frac{1}{2}\)+ \(\frac{1}{2}\)+ \(\frac{1}{2}\)+ \(\frac{1}{2}\)+ \(\frac{1}{2}\)+ \(\frac{1}{2}\)+ \(\frac{1}{2}\)
= \(\frac{1}{2}\)x 10
= 5
\(\frac{10}{8}+\frac{10}{8}+\frac{10}{8}+\frac{10}{8}+\frac{10}{8}+\frac{10}{8}+\frac{10}{8}+\frac{10}{8}\)
\(=\frac{10}{8}.8\)
\(=\frac{10.8}{8}=10\)
10/8 + 10/8 + 10/8 + 10/8 + 10/8 + 10/8 + 10/8 + 10/8
= 10/8 . 8
= 10
k mik nhé
A. 3/6; 9/6; 1/3
B. 2/3; 8/6; 4/10
C. 10/15; 2/3; 8/12
D. 9/15; 2/3; 12/10
Câu 1:
A = (a x 7 + a x 8 - a x 15) : (1 + 2 + 3 + ........ + 10)
A = a x(7+8-15) : (1+2+3+...+10)
A = a x 0 : (1+2+3+...+10)
A = 0: (1+2+3+4+...+10)
A = 0
Câu 2:
B = (18 - 9 x 2) x (2 + 4 + 6 + 8 + 10)
B = (18 - 18) x (2+4+6+8+10)
B = 0 x ( 2 + 4 + 6 + 8 +10)
B = 0
Giáng sinh vui vẻ nhé !
A = {a x (7 + 8 - 15 ) }: (1+2+3+4+........+10)
= {a x 0 } : (1+2+3+4+........+10)
= 0 : (1+2+3+4+........+10)
= 0
đây câu A đây
\(\dfrac{10}{8}\) : 2
= \(\dfrac{5}{4}\) \(\times\) \(\dfrac{1}{2}\)
= \(\dfrac{5}{8}\)