Adding Rational Numbers: Key Concepts and Practice

Mr. Pastori guides students through a tutorial on adding rational numbers, including decimals and fractions. He provides examples, explains the use of direction arrows, and demonstrates solving word problems with equations. The video encourages students to practice independently and check their work against the solutions provided.

What is the opposite of saving $34?

• Spending $34

• Saving $68

• Saving $34

• Spending $68

What do you get when you add 54 and -54?

• 54

• -54

• 0

• 108

When adding numbers with direction arrows going in opposite directions, what operation do you perform?

• Division

• Addition

• Multiplication

• Subtraction

What is the sum of 28.28 and -28.28?

• 28.28

• 0

• 56.56

• -28.28

How do you simplify the fraction 4/12?

• 1/2

• 1/4

• 2/3

• 1/3

What is the common denominator for the fractions 5/7 and 4/21?

• 7

• 35

• 14

• 21

What is the result of adding -15/21 and -4/21?

• -11/21

• 19/21

• -19/21

• 11/21

If you spend $50, deposit $25, and then spend $34 on food, what is the overall change in your money?

• $59

• -$59

• $9

• -$9

Which of the following represents the equation for spending $50, depositing $25, and spending $34?

• -50 + 25 + (-34)

• 50 - 25 + 34

• -50 - 25 + 34

• 50 + 25 - 34

Create a word problem for the equation 40 + (-20). Which of the following is a correct example?

• I earned $40 and spent $20 on candy.

• I spent $20 and earned $40.

• I earned $20 and spent $40 on candy.

• I spent $40 and earned $20.