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a) \(\frac{15}{16}:\frac{25}{24}=\frac{15}{16}.\frac{24}{25}=\frac{9}{10}\)
b) \(10:\frac{5}{3}=10.\frac{3}{5}=6\)
c) \(\frac{5}{3}:10=\frac{5}{3}.\frac{1}{10}=\frac{5}{30}=\frac{1}{6}\)
a. \(\frac{15}{16}:\frac{25}{24}=\frac{15}{16}.\frac{24}{25}=\frac{9}{10}\)
b. \(10:\frac{5}{3}=10.\frac{3}{5}=6\)
c. \(\frac{5}{3}:10=\frac{5}{3}.\frac{1}{10}=\frac{1}{6}\)
\(\left(24\%+\frac{3}{4}+0,76+25\%\right)\times\left(3\frac{5}{7}+1\frac{8}{28}\right)\)
\(=\left(\frac{6}{25}+\frac{3}{4}+0,76+\frac{1}{4}\right)\times\left(\frac{26}{7}+\frac{36}{28}\right)\)
\(=\left(\frac{6}{25}+1+0,76\right)\times\left(\frac{26}{7}+\frac{36}{28}\right)\)
\(=\left(\frac{6}{25}+1,76\right)\times\left(\frac{26}{7}+\frac{9}{7}\right)\)
\(=5\times\left(\frac{6}{25}+1,76\right)\)
= 5 x 2
= 10
\(=66\frac{5}{12}+37+25\frac{1}{2}\)
\(\frac{797}{12}+\frac{444}{12}+\frac{51}{2}=\frac{1241}{12}+\frac{306}{12}=\frac{1547}{12}=128\frac{11}{12}\)
**** **** ****
\(66\frac{5}{12}+36\frac{12}{12}+25\frac{12}{24}=66\frac{5}{12}+36+1+25\frac{6}{12}=\left(66+37+25\right)+\left(\frac{5}{12}+\frac{6}{12}\right)=128+\frac{11}{12}=128\frac{11}{12}\)
a, \(\dfrac{90}{37}-\dfrac{38}{25}-\dfrac{8}{25}-\dfrac{4}{25}\)
= \(\dfrac{90}{37}\) - \(\dfrac{38+8+4}{25}\)
= \(\dfrac{90}{37}\) - 2
= \(\dfrac{16}{37}\)
\(\dfrac{24}{29}\) + \(\dfrac{32}{41}\) + \(\dfrac{34}{29}\) + \(\dfrac{50}{41}\)
=(\(\dfrac{24}{29}\) + \(\dfrac{34}{29}\)) + (\(\dfrac{32}{41}\) + \(\dfrac{50}{41}\))
= \(\dfrac{58}{29}\) + \(\dfrac{82}{41}\)
= 2 + 2
= 4
12/25 tấn = 480 kg
24/25 tấn = 960 kg
42/25 tấn = 1680 kg
Số gạo trung bình mỗi ngày cửa hàng nhà cô Mai bán được:
(480 + 960 + 1680) : 3 = 1040 (kg)
tự tính không rảnh
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