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What do you notice? How many beads do you see?

Some of the beads are hiding behind the blue cover. There are 13 beads in all.
How many beads are hidden? Use math words, numbers, or pictures to explain how you know.

Challenge

What addition and subtraction equations can you write to describe the beads?

Follow-up

Show 13 beads with a different number of beads hiding.
You can use the Number Rack app or draw a picture. How many beads did you hide?

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i What do you notice? How many beads do you see? Some of the beads are hiding behind the blue cover. There are 13 beads in all. How many beads are hidden? Use math words, numbers, or pictures to explain how you know. Challenge What addition and subtraction equations can you write to describe the beads?

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The number of hot air balloons in both pictures is the same.

How many hot air balloons are hidden behind the cloud? How do you know? How can you finish the equation to make it true?

What do you notice about how the blue number changed? What about the red number?

Now both pictures have more than 8 hot air balloons each. You get to decide how many!
How many hot air balloons might be hidden behind each cloud? How do you know?

Complete the equation to make it true.
What do you notice about how the number changed?

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The number of hot air balloons in both pictures is the same. How many hot air balloons are hidden behind the cloud? How do you know? How can you finish the equation to make it true? What do you notice about how the blue number changed? What about the red number?

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Look at this set of four pictures. Decide which one doesn't belong with the other three. Use math words to describe your thinking. There are many ways to think about each one!

Challenge

Find reasons why each of the pictures might not belong with the other three.

Share

Explain your thinking to someone else. Do they have different reasons why one doesn't belong?

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Which One Doesn't Belong? Less Than, Greater Than

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Look at this set of four pictures. Decide which one doesn't belong with the other three. Use math words to describe your thinking. There are many ways to think about each one! Find reasons why each of the pictures might not belong with the other three. Explain your thinking to someone else.