a) \(\frac{2}{3}\)x \(\frac{4}{7}\);b)\(\frac{3}{11}\)x 2 ;c) 4 x \(\frac{2}{7}\);d) \(\frac{8}{21}\): \(\frac{2}{3}\);e) \(\frac{3}{7}\)x \(\frac{7}{3}\);f) \(\frac{3}{7}\): \(\frac{3}{7}\);g) \(\frac{2}{3}\)x \(\frac{1}{6}\)x \(\frac{9}{11}\);h)...
Đọc tiếp
a) \(\frac{2}{3}\)x \(\frac{4}{7}\);
b)\(\frac{3}{11}\)x 2 ;
c) 4 x \(\frac{2}{7}\);
d) \(\frac{8}{21}\): \(\frac{2}{3}\);
e) \(\frac{3}{7}\)x \(\frac{7}{3}\);
f) \(\frac{3}{7}\): \(\frac{3}{7}\);
g) \(\frac{2}{3}\)x \(\frac{1}{6}\)x \(\frac{9}{11}\);
h) \(\frac{2x3x4}{2x3x4x5}\).
\(\frac{2}{3}.\frac{4}{7}=\frac{8}{21}\)
\(\frac{3}{11}.2=\frac{6}{11}\)
\(4.\frac{2}{7}=\frac{8}{7}\)
\(\frac{8}{21}:\frac{2}{3}=\frac{8}{21}.\frac{3}{2}=\frac{21}{2.21}=\frac{1}{2}\)
\(\frac{3}{7}.\frac{7}{3}=\frac{21}{21}=1\)
\(\frac{3}{7}:\frac{3}{7}=\frac{3}{7}.\frac{7}{3}=\frac{21}{21}=1\)
lỡ tay bấm gửi trả lời luôn
\(\frac{2}{3}.\frac{1}{6}.\frac{9}{11}=\frac{2.9}{18.11}=\frac{2.9}{2.9.11}=\frac{1}{11}\)
\(\frac{2.3.4}{2.3.4.5}=\frac{6.4}{6.4.5}=\frac{24}{24.5}=\frac{1}{5}\)