NRICH: Adding in Pairs
NRICH: Adding in Pairs
These are the results when 3 numbers were added in pairs. What were the numbers?
Three whole numbers, when added two at a time, give sums of 39, 48 and 51.
What is the largest of the three numbers?
This problem is taken from the World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our short problems collection.
Age 11 to 14
NRICH (University of Cambridge)
Math Topics
Algebra & Pre-Algebra, Linear Equations
Middle School, High School
6th Grade, 7th Grade, 8th Grade, 9th Grade
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NRICH (University of Cambridge)
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Resource k12
NRICH: Adding in Pairs
These are the results when 3 numbers were added in pairs. What were the numbers?
Three whole numbers, when added two at a time, give sums of 39, 48 and 51.
What is the largest of the three numbers?
This problem is taken from the World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our short problems collection.
Age 11 to 14
NRICH (University of Cambridge)
Math Topics
Algebra & Pre-Algebra, Linear Equations
Middle School, High School
6th Grade, 7th Grade, 8th Grade, 9th Grade
What are you looking for?
Organization
NRICH (University of Cambridge)
Website URL
Type of Resource
Challenge