To do:We have to classify the given angles as right, straight, acute, obtuse or reflex.Solution:(a) The given angle is less than $90^o$.Therefore, it is an acute angle.(b) The given angle is more than $90^o$ but less than $180^o$Therefore, it is an obtuse angle. (c) The given angle is equal to ... Read More

Given:A piece of wire \( \frac{7}{8} \) metre long broke into two pieces. One piece was \( \frac{1}{4} \) metre long.To do: We have to the length of the other piece.Solution: Total length of the wire $= \frac{7}{8}\ m$Length of one piece of wire $= \frac{1}{4}\ m$This implies, Length of the other ... Read More

Given:Nandini's house is \( \frac{9}{10} \mathrm{~km} \) from her school. She walked some distance and then took a bus for \( \frac{1}{2} \mathrm{~km} \) to reach the school.To do: We have to the distance she walked.Solution: Distance between the school and house $= \frac{9}{10}\ km$Distance traveled by bus $= \frac{1}{2}\ km$This implies, ... Read More

Given:Asha and Samuel have bookshelves of the same size partly filled with books. Asha's shelf is \( \frac{5}{6} \) th full and Samuel's shelf is \( \frac{2}{5} \) th full.To do: We have to the find whose bookshelf is more full and by what fraction.Solution: Fraction of Asha’s bookshelf full $= \frac{5}{6}$Fraction ... Read More

Given:Jaidev takes \( 2 \frac{1}{5} \) minutes to walk across the school ground. Rahul takes \( \frac{7}{4} \) minutes to do the same. To do: We have to the find who takes less time and by what fraction.Solution: Time taken by Jaidev to walk across the school ground $=2\frac{1}{5}$ minutes$= \frac{2\times5+1}{5}$ minutes$=\frac{11}{5}$ minutesTime ... Read More

To do:We have to fill the table.Solution:From the figure,HundredsTensOnesTenths(a)0312(b)1104

To do :We have to solve the given expressions. Solution :(a) $\frac{1}{18} + \frac{1}{18} =\frac{1+1}{18}$$= \frac{2}{18}$$=\frac{1}{9}$The value of $\frac{1}{18} + \frac{1}{18}$ is $\frac{1}{9}$(b) $\frac{8}{15} + \frac{3}{15} =\frac{8+3}{15}$$= \frac{11}{15}$The value of $\frac{8}{15} + \frac{3}{15}$ is $\frac{11}{15}$.(c) $\frac{7}{7} - \frac{5}{7} =\frac{7-5}{7}$$= \frac{2}{7}$The value of $\frac{7}{7} - \frac{5}{7}$ is $\frac{2}{7}$.(d) $\frac{1}{22} + \frac{21}{22} =\frac{1+21}{22}$$= ... Read More

 Given :Shubham painted \( \frac{2}{3} \) of the wall space in his room. His sister Madhavi helped and painted \( \frac{1}{3} \) of the wall space.To do :We have to find the wall space painted by them together. Solution :Wall space painted by Shubham in his room $= \frac{2}{3}$Wall space painted ... Read More

To do :We have to find the missing fractions. Solution :(a) Let the missing fraction be $x$This implies,  $\frac{7}{10}-x=\frac{3}{10}$$x=\frac{7}{10}-\frac{3}{10}$$x=\frac{7-3}{10}$$x=\frac{4}{10}$$x=\frac{2}{5}$Therefore, the missing fraction is $\frac{2}{5}$.(b) Let the missing fraction be $x$This implies,  $x-\frac{3}{21}=\frac{5}{21}$$x=\frac{5}{21}+\frac{3}{21}$$x=\frac{5+3}{21}$$x=\frac{8}{21}$Therefore, the missing fraction is $\frac{8}{21}$.(c) Let the missing fraction be $x$This implies,  $x-\frac{3}{6}=\frac{3}{6}$$x=\frac{3}{6}+\frac{3}{6}$$x=\frac{3+3}{6}$$x=\frac{6}{6}$$=1$Therefore, the missing fraction is $1$.(d) Let ... Read More

Given: The Driver of a three-wheeler moving with a speed of 10 m per sec stops a vehicle and brings it to rest in 4sec. The mass of the three-wheeler is 400 kg and the mass of the driver is 65 kg.To do: To find the average retarding force acting ... Read More