More Mental Addition and Subtraction (3-digit numbers)

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".

If you cannot see the video above, click here for an alternative video player.

See also

Regrouping twice in subtraction

Math Mammoth Grade 3 curriculum

Back to 3rd grade videos index

Back to the index of all videos