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grade 1 · WN-001

Find the unknown in a story

Represent adding to, putting together, taking from, and comparing with an unknown in different positions.

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Show what I knowFresh problem · seed 929673177

9 birds were in a tree. Some more arrived, and then there were 20. How many arrived?

start9

→

change?

→

result20

Your answer

It is always okay to go back to more help.

Math Lab is a working name for Ready Rung's separate math-learning product. Guided success and independent evidence are reported separately.