It's Your Turn!
Show your work while adding on a number line.
Goal:
Goal:
Practice!
Goal: Use a number line to show both addends.
Hands-On
Let’s review what we know about adding on a number line. Number lines help us see and understand the numbers we add. Today, we are using number lines with the numbers 0 - 20. Some number lines have much lower and much higher numbers.
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The numbers on the number line get larger when you count this way. It is kind of like reading a book!
Let’s find the sum in this word problem using a number line. Posie was at the library doing homework when she suddenly looked up. Books were flying in the air! First she saw 4 books, and then she saw another 5 books flying around! How many books did Posie see flying in the library altogether?
Type the addends in the spaces below. Click the Check button to check your answer.
That’s right! We know 4 and 5 are the addends because Posie saw those numbers of books flying in the air.
Sorry, those are not the correct addends. Go back to the word problem and look for the numbers of books Posie saw.