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Content about adding and subtracting in elementary mathematics. Exercises, tutorials, and problems with adding and subtracting in elementary mathematics. Here you will find posts about adding and subtracting to make learning mathematics easier and more fun.

Jul24

## Round and Estimate Subtraction Problems

In this post, we are going to learn how to round and use estimation in subtraction problems. Mastering this skill is helpful in verifying that an exact answer is of the correct order of magnitude and also in determining whether an answer is reasonable or not. Round and Estimating Subtraction Problems in Tens Round the […]

Jul07

## Review Vertical Subtraction with Examples

In today’s post, we are going to review vertical subtraction. As always, we are going to review with examples that will help us to understand what vertical subtraction consists of and how to solve such problems. Before we begin, let’s review the material that we’ll use to subtract. We’ll use individual cubes to represent 1s. […]