Math Resources- Addition and Subtraction Strategies

 

Open Number Line

Use a number line to make jumps to find the distance between the numbers in your problem.

https://www.youtube.com/watch?v=t4vGKYdDzCg 

 

Stacking Method

This is the traditional algorithm many of us learned as children.

 

Adding by Place 

Break numbers down by place value then add the ones, the tens, and the hundreds.

http://www2.skanschools.org/webpages/bcohen/files/3-investigations_additionsstrategies.pdf 

 

Boxes, Sticks, and Dots

A representation of place value with a physical picture that helps kids draw and count to solve an addition or subtraction problem.

https://www.eduplace.com/math/mthexp/g3/mathbkg/pdf/mb_g3_u1.pdf

 

Use a Hundreds Chart

https://www.eduplace.com/parents/hmcam/reviews/pdf/2/2hmmca-cr-09-01-rt.pdf