Numeracy Challenge

Winners from Numeracy Challenge 1: 

Congratulations to: 

Jason Hao -7B 

Solution: A. 

The 2 dollars. it may seem not much, but it is more $20x7=$140 2+4+8+16+32+64=$254 so the 2 dollars is the answer. B. First, find 2 to the power of 30, which is just 1024x1024x1024 (because 1024 is 2 to the power of 10 and that 3 times multiplied together is 2 to the power of 30.) The answer to that is 1,073,741,824. Then multiply that by 2 because of the numbers before that. that equals 2,147,483,648. Finally, minus 2 which will give you 2,147,483,646. (Which is the answer.) 

Emily Ding -8C 

Solution: A. 

I would rather be paid $2 for the first day and have your salary double every day for a week because my pay would be (2+4+8+16+32+64+128=) $254 rather than (20x7=)$140. This way, I would make $114 more. b. n=initial amount x (2) ^number of days n=2x2^30 n=$2,147,483,648 You would've earned $2,147,483,648. 

Kudos to both the students. It was wonderful to see the thinking and reasoning behind the solution. It was a good reinforcement that there are multiple ways to get to the correct solution. 

Staff member mention: Lisa Hazelwood: She persevered till she got the correct solution.

Challenge 2: 

Use the link below to add your responses to the Numeracy Challenge No. 2 https://forms.office.com/r/5EJkKwLX2Q If 4 painters can paint 4 houses in 4 days. Assume the painters cooperate efficiently. A) How long would it take for 1 painter to paint 1 house? B) How many houses could 6 painters paint in 8 days?

Ritika Mahajan