Mental Math Strategies: Addition & Subtraction to 20 (Bundle)

While teaching second grade for 10 years, I noticed that kids really struggled with math facts to 20 in both addition and subtraction. They had a hard time memorizing math facts and made careless errors. Once I started teaching students mental math strategies, they were able to add and subtract with fewer errors and frustration. This even helped them to learn how to multiply and divide with ease. I created this product based on exactly what students needed to feel successful in learning, understanding and practicing mental math strategies in addition and subtraction to 20.

This product includes:

•Two mental math strategies reference sheets for teacher and students –Addition mental math strategies and subtraction mental math strategies.

11 Addition Mental Math Strategy Posters —use these for reference while teaching, display on a bulletin board, or post in your math center, etc.

•Doubles

•Doubles Plus One

•Doubles Plus Two

•Doubles Minus One

•Doubles Minus Two

•Combinations of 10

•Add One to Nine

•Counting Up

•Make Ten

•Adding Ten

•Commutative Property

6 Subtraction Mental Math Strategy Posters —use these for reference while teaching, display on a bulletin board, or post in your math center, etc.

•Counting Back

•Counting Up

•Doubles

•Think Addition

•Fact Families

•Subtracting from Ten

•Mental Math Strategy Cards (size about 5.5 in x 4 in – can be copied front to back)—put these on a binder ring for each student to have their own set of mental math strategies to practice. Put a few sets in your math center too for reference, practice, study groups, etc.

•Think and Solve Mental Math Task Cards– this includes 4 task cards for each math strategy (68 cards) Students think about which strategy they can use to solve either the addition or subtraction math fact (there could be more than one strategy used to solve). They solve and write the strategy on the card. Laminate for reuse.

•Make Your Own Think and Solve Task Cards– Includes 4 templates (2 addition girl/boy and 2 subtraction girl/boy) so students can create their own task cards and swap with a partner to solve. Great for a small group activity, math center activity, exit ticket, etc.

I hope this resource helps your students build their math muscles to become strong, confident mathematicians.

From my classroom to yours…Enjoy!

This is a digital download (PDF).

Purchasing this product grants permission for use by one teacher in his or her own classroom. If you intend to share with others, please purchase an additional license for the desired product.