Provider
Level
3rd
Price
Free
None
Add-ons available
Common Core
Yes
No
Learn how to add numbers like 259 + 363. These addition problems are a harder than the ones we’ve done before because they require regrouping (also called carrying).
Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computing, history, art history, economics, and more, including K-14 and test preparation (SAT, Praxis, LSAT) content. We focus on skill mastery to help learners establish strong foundations, so there's no limit to what they can learn next!