🔢 Mathematics · Addition & Subtraction
Fluent adding and subtracting within 1000
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and the relationship between addition and subtraction
Typical age: 8–9 years
“Can your child add or subtract three-digit numbers like '672 − 348' reliably, choosing whichever method works best for them?”
0 / 3 mastered