Calcora
Problems
Friends
Leaderboard
Profile
Open user menu
?
Open main menu
Write a Problem
Problem writing is available on desktop only. Open this page on a larger screen to continue.
Back to Problems
Difficulty
Beginner
Novice
Intermediate
Advanced
Expert
Language
en
de
Write
Preview
Save Problem
Problem Title (en)
Problem Description Editor (en)
Compute the value of: $$12 + 35 = ?$$ Enter only the final numeric answer.
Solution (en)
47
Hints (en)
Add Hint
1. Add tens, then ones.
Remove
2. 12 + 35 = (10 + 30) + (2 + 5).
Remove
en
de