Activity: How to subtract two-digit numbers Discover all about subtracting two-digit numbers with this interactive activity, then put your knowledge to the test.

Quiz: Subtraction with up to 4-digit numbers Complete this quiz to understand how to subtract with up to four-digit numbers. Then put your knowledge to the test.

Add and subtract three-digit numbers with Springling and Minni and Subbi.

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!

Korean children's ability to solve addition problems with sums of 10, single-digit addition problems with sums between 10 and 18, and single-digit subtraction problems with minuends between 10 and 18 ...