Main content
Course: 3rd grade?>?Unit 3
Lesson 8: Addition and subtraction missing value problemsFind the missing number (add and subtract within 1000)
Problem
What number makes this equation true?
If you're seeing this message, it means we're having trouble loading external resources on our website.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.