Early Enrichment #31: Math Challenges 2

Math Olympiad is back! 

Last year, there was  an Early Enrichment post calling students to become a math olympiad. If you haven’t checked out that post, click here!

Here are six new challenges to complete!

1). The three McMath sisters Amy, Betty and Cindy wear different color skirts to school. Their skirt colors are red, blue and yellow. Amy’s skirt is not red and not blue. Betty’s skirt is not blue. What color of skirt does each girl have on?

Screen Shot 2016-11-07 at 8.46.42 AM

2). Calculate the following :

999 +  99 + 2 =

998 + 998 + 4 + 9 + 9 =

 

3) Subtraction: Fill in the blanks:

67                                               52

–   ________                      –  __________

42                                               20

95                                              94

–   ________                      –  __________

24                                               32

 

4)Three kids eat 1 apple each at the same time. It took them 3 minutes to eat them. How many minutes does it take for 6 kids to finish eating 6 apples?  (Each kid eats 1 apple.)

Screen Shot 2016-11-07 at 8.49.57 AM

5) Bob likes to skip stones at the local pond. He collected 15 rocks and separated them into 5 piles. Each pile has a different number of rocks. How many rocks are there in each pile?

 

*Questions from Math Top 10 

Turn in your work to your EY coordinator to have it checked. 

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