🔢 Mathematics · Addition & Subtraction
Adding numbers
Add up to four two-digit numbers using strategies based on place value and properties of operations
Typical age: 7–8 years
“Can your child add up four two-digit numbers — like '14 + 23 + 32 + 19' — by grouping them cleverly, rather than just plodding through from left to right?”
0 / 3 mastered
Explore graph
Needs first
Unlocks next
This doesn't unlock anything else yet.