$19$ thousand $+ 19$ hundred $+ 19$ ones is equal to:

Miss reena uses a grid activuty, to teach the concept of manipulation of decimals. a sample is illustrated below:

Through this method, Miss Reena is:

The solid as shown in the figure is made up of cubical blocks each of side $1 \mathrm{cm}$. The number of blocks is:

The NCF ($2005$) considers that Mathematics involves 'a certain way of thinking and reasoning. The vision can be realized by_____.

 The figure consists of five squares of the same size. The area of the figure is $180$ square centimetres. The perimeter (in cm) of the figure will be _____.

While teaching the addition of fractions, it was observed by Mr. Singh that the following type of error is very common:

 $\frac{2}{3}+\frac{2}{5}=\frac{4}{10}$ Mr. Singh should take the following remedial action: