Build, read, write, and represent three-digit numbers using base-10 blocks and symbols.

Quiz: Adding up to 4-digit numbers together Complete this quiz to understand how to add up to 4-digit numbers together. Then put your knowledge to the test.

01/25/2021 Math Mights Add 2-Digit Numbers Season 3 Episode 304 | 15m 59sVideo has Closed Captions| CC Join Mrs. Markavich for a word problem with her friend Professor Barble!

The present paper describes the success, the methods (mental, informal written, standard algorithm) and the strategies of informal written arithmetic to be observed when 300 elementary students worked ...