This Week's Work : Week 45 - for Inquisitive Young Mathletes

From Mathcounts Mini : More Constructive Counting

See if you can use "sticks and stones" to solve the following questions (it requires a little twist).

Tossing 3 dice, what is the probability that the sum is 10 ? 

Tossing 4 dice, what is the probability that the sum is 10 ?

Tossing 4 dice, what is the probability that the sum is 18 ? 

If you want to try harder problems, check out this year's AIME II, 1, 3 and 4. (related to what we've learned recently)

This week's new links, working together, direct and inverse proportion, rate, time distance. 

• Section 7.1: Direct Proportion
• Section 7.2: Inverse Proportion
• Section 7.3: Joint Proportion
• Section 7.4: Speed Part 1*
• Section 7.4: Speed Part 2*
• Section 7.4: Rates Part 1*
• Section 7.4: Rates Part 2 - Work Problems*
• Section 7.4: Speed Problem Solving
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Take care and happy problem solving. 

Cheers, Mrs. Lin