Using distributive property
$258\times 1008=?$

Which of the following is a triangular number?

Which of the following numbers can be shown as two rectangles?

Which number can be shown as a square?

Which number can be shown as a line?

Follow the below pattern and find the value of $12345\times 8+5=?$

$$\begin{gathered} 1\times 8+1=9 \\ 12\times 8+2=98 \\ 123\times 8+3=987 \end{gathered}$$

A vendor supplies $105$$$$\mathrm{litres}$ of milk to a hotel in the morning and $85$$$$\mathrm{litres}$ of milk in the evening. If the milk costs $₹$$20$ per $\mathrm{litre}$, how much money is due to the vendor per day?

Which property is being used here?
$2\times 49\times 50=2\times 50\times 49$

$80+2005+20=80+20+2005$.
Which property is used in the above sum?