Understanding Number Lines for Addition and Subtraction

How can a number line help in solving addition problems?

• By converting numbers into fractions

• By representing numbers as points and counting hops

• By dividing numbers into smaller parts

• By showing the multiplication of numbers

What is the difference between 12 and 9 on a number line?

• 4

• 3

• 2

• 5

If you start at 7 on a number line and need to reach 19, how many hops do you need to make?

• 11

• 10

• 13

• 12