Understanding Radina's Checking Account Balance

The video tutorial explains how to calculate Radina's new balance after writing a check for $90 and depositing $500, starting with an initial balance of $50. It demonstrates the calculation using both direct arithmetic and algebraic expressions, introducing the concept of expressing the balance in terms of a variable, c. The tutorial emphasizes understanding subtraction as adding a negative and combining like terms.

What is the initial amount in Radina's checking account?

• $90

• $460

• $50

• $500

Tags

CCSS.7.EE.B.3

How much does Radina's balance decrease when she writes a check?

• $500

• $460

• $90

• $50

Tags

CCSS.7.NS.A.1A

What is the effect of depositing a $500 check on Radina's balance?

• No change

• Increases by $500

• Decreases by $500

• Decreases by $90

Tags

CCSS.7.NS.A.1C

How can subtracting a positive number be expressed?

• As adding a positive

• As subtracting a negative

• As adding a negative

• As multiplying by zero

Tags

CCSS.7.NS.A.1C

What is the result of 50 minus 90?

• 90

• -40

• 50

• 40

Tags

CCSS.7.NS.A.3

What is Radina's new balance after all transactions?

• $500

• $50

• $460

• $410

Tags

CCSS.HSF.LE.B.5

What does the variable 'c' represent in the context of Radina's account?

• The initial amount in the account

• The final balance

• The amount deposited

• The amount of the check written

Tags

CCSS.6.EE.B.6

How is the expression for Radina's new balance written in terms of 'c'?

• c + 500 - 90

• c - 90 + 500

• c + 410

• c - 410

Tags

CCSS.7.NS.A.1C

What is the result of combining the constant terms -90 and 500?

• 410

• -410

• -90

• 90

Tags

CCSS.6.EE.A.2C

If c is 50, what is the final balance using the expression c + 410?

• $50

• $500

• $410

• $460

Tags

CCSS.6.EE.A.2C