Question

If 31 students are standing in a row, then students are standing in 5 rows.

• A. 155
• B. 145
• C. 185

Answer 1

The correct option is A 155

We need to find the total number of students standing in 5 rows.

Number of students standing in 1 row = 31

Number of rows = 5

∴ Number of students standing in 5 rows = 31 $\times$ 5

For this muliplication process, we split 31 in the respective place values as:
31 = 30 + 1


Now, we multiply both 30 and 1 by 5 and add the two terms.


So, the final answer becomes 155.

Multiplying using the area model, we observe,


Hence, 155 students stand in 5 rows.