Are you able to use a with no regrouping?
Find the value of 41+56.
When we need to regroup to add or subtract, there are some different ways we can do this. Let's see how to solve an addition problem, then a subtraction problem.
Find the value of 997 - 648.
What happens with larger numbers? We can use a standard algorithm to solve addition and subtraction, as we see in this video.
Find the value of 2124 + 3351.
When we need to do some trading, or regrouping, the standard algorithm helps us line up place value digits. Let's see how to add or subtract, when we need to regroup.
Find the value of 7263 - 2418.
uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers