Stage: 3 Challenge Level: 
Replace the letters with numbers to make the addition work out correctly.
| R | E | A | D | |
| + | T | H | I | S |
|
|
||||
| P | A | G | E | |
Counting. Algebra - generally. Number operations - generally. Integers. Addition & subtraction. Factors and multiples. Number - generally. Mathematical reasoning & proof. Using symbols. Place value.
Published April 2000.
Copyright © 2007. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project, which also includes the Plus and Motivate sites.
email: nrich@damtp.cam.ac.uk
