Posts by sahana
Total # Posts: 25
Hi. I found this question on a Math Counts practice test and it seriously confused me. I've never learned about this, and it would help if someone helped me. Thanks in advance. How many elements are in the intersection of the set of all the prime numbers less than 30 and ...
November 26, 2010
Every day a commuter takes a train that arrives at her station at precisely 6:00 pm. She is met at the station by her husband, who also arrives at precisely 6:00 pm. He always drives the same route to the station and never varies his speed. One day the commuter takes and ...
January 16, 2010
I know the answer to this question, but I want to find a simpler way of doing it... ---Find the sum of the counting numbers from 1 to 25 inclusive. In other words, if S= 1+2+3+...+24+25, find the value of S. Thanks!!!!!
April 21, 2009
You always want to move the numbers to one side and the variable to another side to do that... 25+7=p-6 Move the 6 to the other side. Since its a minus make it a plus... 25+7+6=p 38=p There you have your answer!
October 22, 2008
What you have to do is work backwords. First since it says"you get 8" and before that is says "divide by 7" you have to multiply 8x7 because your working backwords. Then it says to multiply by 2, you have to divide by 2. 8x7 is 56 and 56/2 is 28. Now you ...
September 16, 2008
There is a subject and a predicate in every sentence. The Subject is the main part of a sentence. For example- Susie is writing a story. Susie is the Subject. The predicate is the remaining words.
September 15, 2008
The commutative property works the same way with only multiplication and and addition. It means that no matter if you switched the numbers around, it will always equal the same.
August 25, 2008
What you have to do is look for the highest tenth number. if some of them are the same look in the hundreths. If those are the same look in the thousandths. Then you keep on going.
May 3, 2008