Addition & subtraction - 3rd grade— Episode 1

We practice adding a single-digit number to a 3-digit number and also subtracting a single-digit number from a 3-digit number, using mental math (I show various strategies). Along the way we also look at which expression or number sentence matches a word problem, make a number pattern, and in the end, solve missing number "puzzles". Find more 3rd grade math videos at