Question

Peyton go shopping she finds two shirts one cost $24.97 the other cost $13.75 she needs to know if she has enough money to buy both shirt using mental math she rounds $24.97 to $25 and add that to $13.75 to get $38.75 how does Peyton need to say to find the exact a total of 2 shirts

Answer 1

We know that Peyton wants to buy two shirts.

• First shirt cost $24.97.

,

• Second shirt cost $13.75.

To do the mental math is ok to round $24.97 to $25, and them sum with $13.75.

However, to get the exact number, Peyton needs to subtract 3 pennies from the last amount $38.75, becuase she rounded before.

Therefore, to find the exact amount she needs to subtract 3 pennies.