Add Tens on an Open Number Line

Use the open number line on your paper to find the sum. 30 + 10 = ____

Use the open number line on your paper to find the sum. 55 + 30 = ____

Use the open number line on your paper to find the sum. 23 + 20 = ____

Use the open number line on your paper to find the sum. 46 + 40 = ____

Matt found 55 + 28 using the open number line. Is his work correct? Type yes or no

Sam has 38 golf balls. He gets 20 more golf balls. How many golf balls does Sam have now?

Do number 9 on your paper. Write done here.

Evaluate responses using AI:

OFF

What is the missing number in the equation 28 + ___ = 78?

Which equation does the open number line show on number 11?

• 12 + 20 = 32

• 12 + 30 = 42

• 12 + 40 = 52

• 12 + 50 = 62