Stage: 3 Challenge Level: 
When the number x 1 x x x is multiplied by 417 this gives the answer 9 x x x 0 5 7.
Find the missing digits, each of which is represented by an "x" .
Integers. Selecting and using information. Working systematically. Algorithms. Place value. Multiplication & division. Workshop. Properties of numbers. Factors and multiples. Divisibility.
Published October 2002.
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