“Use your mental math strategies” is a phrase heard around the world in classrooms. But just what IS mental math? And how can students get confident in using it? Cozy up and keep reading to find some tried and true (teacher backed) strategies to get your little mathematicians soaring through their work.
What is Mental Math?
Mental math is simply being able to do math in your head. It means not having to take out the pencil and paper, use your fingers or count manipulatives. Sounds great right? It is essential that teachers provide lots of mental math practice in order for students to truly be confident in ditching finger counting (or other slower strategies). Let’s talk about a few ways to practice and some strategies to teach!
Mental Math Strategies
Check out these strategies and resources to get kids confident in their mental math abilities.
Mental Math Strategy #1: Subitizing
This is a fun word to even say! AND kids love practicing this skill. Subitizing is the ability to instantly recognize a number of objects without actually having to count them. This allows students to see numbers differently, practice breaking them up in different ways and can lead to quicker addition and subtraction. How do you practice this? With fun videos and FREE flashcards!
Also, go grab these free subitizing cards with game ideas from Minneapolis Public Schools.
AND, check out the game Numtanga from Greg Tang Math. (Really, check out all of his games!)
Mental Math Addition Strategies
Most curriculums teach these addition strategies. That is because they help build mental math skills. We listed some most commonly used addition strategies, but there are oodles of them!
Mental Math Strategy #2: Doubles
Doubles are adding a number to itself (3 + 3, etc..) Kids like learning these, like pointing them out when they see them in daily work and easily remember them.
Here’s a fun song to use to practice doubles:
Mental Math Strategy #3: Doubles + 1, Doubles + 2
If students can learn and remember doubles, they can use them to solve addition problems that are only +1 or +2 more. This opens up a wide range of problems students now know!
One way to learn these doubles strategies is targeted practice. A great resource we have is Sticky Math! This resource can be used to hone in on any particular addition or subtraction facts. Even doubles & doubles + more!
Mental Math Strategy #4: Fact Families
Learning how fact families are put together is a sure fire way to help students get more confident in mental math!
Check out these FREE fact family fill in the blank worksheets from MathDrills.com.
Mental Math Strategy #5: Using Addition to Subtract
Subtraction can be a big hurdle for lots of students. However, teach them that they can use their mental math addition to solve subtraction! If they have to solve 17-8 a great thought train would be, “Okay, I know that 8 + 8 =16, so 16-8 would be 8.
Mental Math Strategy #6: Zero the Hero
Adding and subtraction zero is a SNAP when students learn it equals nothing and changes nothing!
Here is a fun song to try!
Mental Math Strategy #7: Turn Around Facts
This goes along well with fact families. The idea is that if students know that 2 + 3 =5, they should quickly (using mental math) know that 3 + 2 = 5 as well. If you are an 80s music fan, you definitely need to use this song in your classroom!
Mental Math Resources
Here are some great LOW PREP and easy to use resources to practice mental math.
1- Small Group & Intervention Math Kit
This resource includes Mental Math Warm Ups! What a great way to start your math lesson each day!
Shop it: Small Group & Intervention Math Kit
Read About It: Using Assessment Data to Plan Small Group Math
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Small Group & Intervention Math Kit
2- Sticky Math
Say goodbye to timed tests that stress students and teachers out! Sticky Math will have your students practicing their math facts – building automaticity quickly in a self-motivating way!
Shop it: Sticky Math Bundle
Read About it: Sticky Math
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3- Math Fact Fluency Sticks
A fun way to differentiate math fact mastery in the classroom!
Read About it: Math Fact Fluency Sticks
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