Question

7. There are 16 children in a ballet class.5 more children join. How many childrenare in the class now? Explain why youneeded to regroup.

Answer 1

Answer:

The number of children in the class now = 21

Regrouping is needed for easier arithmetic operations

Step-by-step explanation:

The number of children in the ballet class = 16

Number of children that join = 5

The number of children in the class now = (The number of children in the ballet class) + (Number of children that join)

The number of children in the class now = 16 + 5

The number of children in the class now = 21

Regrouping is done in order to make it easier to carry out arithmetic operations. Therefore, regrouping is needed for easier arithmetic operations