Step 3 of 37
Addition and subtraction facts, and what the tens and ones in a number mean.
Topics, in order
Final exam
A few questions from every topic, to check you are ready to move on.
Take the final exam ›Learn from
- Khan Academy, the course for this step ›
- Beast Academy, level 1
- Singapore Math, Dimensions Math 1
Move on when
The learner can add and subtract within 10 quickly, without counting on fingers.