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Posted On:
November 1, 2020
at 5:18 pm

Author:
Destiny Madaje

NRICH: Clever Calculation

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NRICH: Clever Calculation

Find the shortcut to do this calculation quickly!

Without using a calculator, or performing any long multiplication calculations, find the value of

2017²−2015×2019

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 14 to 16

 

NRICH (University of Cambridge)
Math Topics
Addition & Subtraction, Quadratic Equations
High School
9th Grade, 10th Grade, 11th Grade
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NRICH
NRICH (University of Cambridge)

NRICH provides thousands of free online mathematics resources for ages 3 to 18, covering all stages of early years, primary and secondary school education – completely free and available to all.

https://nrich.maths.org/
NRICH: Topics in Secondary Mathematics
NRICH (University of Cambridge)

Do you enjoy thought-provoking questions? If so, this is the place for you.

https://nrich.maths.org/9196

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NRICH (University of Cambridge)

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K-12 Categories

Advanced Search

Submit a Resource

NRICH: Clever Calculation

Find the shortcut to do this calculation quickly!

Without using a calculator, or performing any long multiplication calculations, find the value of

2017²−2015×2019

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 14 to 16

 

NRICH (University of Cambridge)
Math Topics
Addition & Subtraction, Quadratic Equations
High School
9th Grade, 10th Grade, 11th Grade

What are you looking for?

Organization

NRICH (University of Cambridge)

Website URL

Type of Resource

Challenge

Assigned Categories

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