# Subtraction

## The Standard Algorithm for Multidigit Addition and Subtraction in 3 Easy Steps

Are you a 2nd Grade teacher who loses sleep over teaching the standard algorithm for multidigit addition and subtraction? Or a 3rd or 4th grade teacher trying to remediate students…

## Why Students Don’t Know Their Basic Math Facts and How to Help

If you teach 3rd grade, you know that some students come to your class not knowing their basic addition and subtraction facts. And in 4th and 5th grade, there are…

## Multi-Digit Computation Game

Computational fluency is still a goal for mathematics instruction. What’s changed is how we approach computation. We have shifted from teaching one methodโtypically the standard algorithmโto a strategy-based approach. Today,…

## FREE Subtraction Choice Board

A while back, I wrote a post about incorporating mathematical reasoning into computation practice. In that post, I shared a free long-division choice board. Today, I am sharing a free…

## Dominoes Addition/Subtraction Number Bonds

Do you wonder where fact families are found in the current standards? The fact is, current standards don’t actually mention fact families at all anymore. Instead, they refer to “the…

## Brain-Boosting Equations

Are you looking for a way to provide your students with engaging computation practice? Today I have a super fun, brain-boosting, elementary math equations game! Brain-Boosting Equations is an activity…

## Subtraction with Regrouping: From Direct Modeling to the Algorithm

More and more curriculum maps are delaying the teaching of the standard algorithm for addition and subtraction until later in the year. This is a good thing! There are several…

## Personal 1,200 Charts

Hundred charts are very versatile tools in the elementary classroom. Working with the patterns on hundred charts helps students develop place value understanding. Hundred charts are also excellent tools for…

## Computation Dice Games

I remember being in a teacher’s classroom and the students were making equations to equal the number of the day, which was 44. I noticed that all the students were…