During one week, Sheila made several changes to her bank account. She made 4 withdrawals of $40 each from an ATM. She also used her check card for a $156 purchase. She then deposited her paycheck of $375. 

By how much did the amount in her bank account change during the week?

Important vocabulary: Withrawal (-) and Deposit (+), a Purchase reduces the money in your bank account

Sheila made a total of 4 withdrawals of $40 each, which amounts to $160 in total withdrawals.

She also made a purchase of $156 using her check card, which further reduced the amount in her account.

Therefore, the total withdrawals and purchases combined are $160 + $156 = $316.

However, she also deposited her paycheck of $375, which increased the amount in her account.

Therefore, the overall change in her bank account during the week is a net increase of $375 - $316 = $59.

So, the amount in Sheila's bank account changed by $59 during the week.