{"type":"rich","version":"1.0","title":"Missing Number Facts","description":"Players complete number sentences with missing numbers, filling blanks in related subtraction and addition facts like 8 - 3 = __ and 3 + __ = 8. This gives practice with finding unknown addends to solve subtraction problems. (1.OA.B.4)","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1774333790303&hashid=YkK4L7oMKl","html":"<iframe src=\"https://arcade.padlet.com/embed/YkK4L7oMKl\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}