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An acronym I just thought of for improving your students' performance on SATs or other standardized tests:

S: SPEED

A:ACCURACY

T:TERMINOLOGY

*(For training purposes only)*

TIME LIMIT: 45 sec

NO CALCULATOR

**HOW MANY 3-DIGIT POSITIVE INTEGERS SATISFY BOTH OF THE FOLLOWING CONDITIONS?**

**• THE PRODUCT OF THE DIGITS IS 72**

**• THE 3-DIGIT INTEGER IS A PALINDROME (an integer that is the same when its digits are reversed)**

Let me know how many of your students can do this within the time limit and no calculator. And for those who could not? Guess that means they need more of these to practice! Why not ask each student to write a similar problem for hw! They learn more from writing their own and we give up control --- perfect!!

**Answer: Read below shameless ad for my book...**

*If interested in purchasing my NEW 2012 Math Challenge Problem/Quiz book, click on BUY NOW at top of right sidebar. 175 problems divided into 35 quizzes with answers at back and DETAILED SOLUTIONS/STRATEGIES for the 1st 8 quizzes. Suitable for SAT I, Math I/II Subject Tests, Common Core Assessments, Math Contest practice and Daily/Weekly Problems of the Day. Includes multiple choice, case I/II/III type and constructed response items.
Price is $9.95. Secured pdf will be emailed when purchase is verified.*

Answer (send yours if you believe I erred!):

2 (namely 383,626)

## Saturday, February 16, 2013

### SAT/CCSSM: How many 3-digit positive integers satisfy...

Posted by Dave Marain at 12:35 PM

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