Adding Tens and Ones on an Open Number Line

What is the purpose of using an open number line in this lesson?

• To multiply numbers quickly

• To subtract numbers easily

• To visualize the addition process

• To divide numbers accurately

How many tens are there in the number 24?

• Four

• Three

• Two

• One

What is the first step in adding tens on an open number line?

• Subtracting tens

• Adding ones

• Making big hops

• Making small hops

What is the result of adding 38 and 24 using the open number line?

• 60

• 52

• 62

• 64

How do you move on the hundreds chart when adding ones?

• Move up

• Move left

• Move down

• Move right

What is the purpose of using a hundreds chart in this lesson?

• To check subtraction

• To verify addition

• To multiply numbers

• To divide numbers

How many small hops are needed to add the ones in 38 + 24?

• Five

• Two

• Four

• Three

In the problem 45 + 32, how many tens are in the number 32?

• Three

• One

• Four

• Two

What is the final sum of 45 and 32?

• 75

• 77

• 79

• 81

What is the last step in the addition process on an open number line?

• Adding ones

• Adding tens

• Subtracting ones

• Subtracting tens