Math Competition Problems Problem of the Week - 8

Updated: Apr 6, 2019

 2BA + C6D  = 8AD. Find out A, B, C and D

Source: Adapted from CML math competition


Math Competition Problems - Problem of the Week 8

Solution:

First let's see the unit's place. For A+D=D, A has to be 0 (zero). This is the identity property of addition. Any number plus zero gives itself. No other number other than zero has this property. Hence A=0 and D can be any number.

Next B+6=A and A=0. So B+6=0. Since B is a positive number, B+6 = 10. So there should be a carry over. And 4+6=10, hence B=4

Now 2+C+1 (carry over) = 8.

So, 3+C=8. Hence C=5


Try one on your own now. Post the answer in the comments section below

Interesting Math Problems

Like what you see? Would you like to have the Problem of the Week delivered to your inbox? Click here to subscribe


As you know I'm an Online Math Tutor. I coach kids for all elementary and middle school math competitions. This is a problem my average 3rd or 4th grader would be able to solve. To know more about me and how I work click here.


#Competition, #Math, #Problems, #MathCompetitionProblems, #ProblemOfTheWeek, #OnlineMathTutor, #OnlineMathTutoring, #OnlineMathEnrichmentPrograms, #ElementarySchoolMathCompetitions,

Want more Cryptarithm puzzles like these to solve? Here's your Cryptarithm puzzles free download

Click here for the previous week's problem Click here for the next week's problem
Problem of the week-7 Problem of the week-9

V's Online Math Tutoring

Vasudha Uddavan

  • YouTube - Grey Circle
  • V's Online Math Tutoring
  • LinkedIn Vasudha Uddavan