Question

Riley just opened a checking account at the bank. Within the first month, she deposited three checks for $34.98, $51.02, and $51.22. She withdrew $5.23 for new pencils, $10.22 for earbuds, and $7.89 for movies from her account in the same month.

(a) Write Riley’s withdrawals as negative rational numbers and her deposits as positive rational numbers.
Answer:



(b) Order the rational numbers from least to greatest and explain your reasoning.
Answer:





(c) At the beginning of the month Riley’s balance was $128. What was her balance at the end of the month after all of her deposits and withdrawals? Show your work, no credit will be given for just an answer.
Answer:

Answer 1

(a) Write Riley’s withdrawals as negative rational numbers and her deposits as positive rational numbers.

deposited: + $34.98

+ $51.02

+ $51.22

withdrew: - $5.23

- $10.22

- $7.89

(b) Order the rational numbers from least to greatest and explain your reasoning.

Answer: - $10.22 , - $7.89 , - $5.23 , + $34.98, + $51.02, + $51.22

Negative numbers are always less than positive numbers. The largest negative numbers are the lowest values.

(c) At the beginning of the month Riley’s balance was $128. What was her balance at the end of the month after all of her deposits and withdrawals? Show your work, no credit will be given for just an answer.

Answer:

Beginning balance: $128

Deposited: + $34.98 + $51.02 + $51.22 = + $137.22

Withdrew: - $5.23 - $10.22 - $7.89 = -$23.34

Balance:

$128 + $137.22 -$23.34 = $241.88