What is this skill?
Adding two numbers that total 20 or less, fluently and accurately.
Why it matters
Quick recall of these facts frees up brainpower for harder problems later — like subtraction and multiplication.
Signs your child needs help
- Always counts on fingers, even for small sums
- Takes a long time on basic facts
- Mixes up addition and subtraction symbols
What improvement looks like
- Recalls many facts within 3 seconds
- Uses strategies like "make ten"
- Explains how they got an answer
Small steps make a big difference.
You don't need an hour. Ten focused minutes a few times a week is enough to see real progress. You're already doing the right thing by being here.
Guided lessons for this skill
Add Within 20: Set A
Practice questions generated fresh, with a note for the grown-up.
Add Within 20: Mixed Practice
Practice questions generated fresh, with a note for the grown-up.
What to do next
A clear next step keeps your child's learning moving forward.
Take-from and compare problems within 20.
Continue learningHow to help at home
Try one short problem together at breakfast — talk through your thinking out loud.
Practice this skill again
Reinforcement and slightly harder activities to build confidence.
Add Within 20: Set A
Practice questions generated fresh, with a note for the grown-up.
Add Within 20: Mixed Practice
Practice questions generated fresh, with a note for the grown-up.
Want a guided plan, not just one skill?
Turn these next steps into a personalized weekly learning plan — free.
Want a full plan, not just one skill?
We'll build a simple weekly plan tailored to your child in 30 seconds.