WALA Place Value

This is a question that Room 2 worked through on Thursday.  Our challenge is to parents, friends and family members to solve the problem within 30 mins and post your answers.

Mrs Frost will post the answers on Monday and the names of the successful people. 

A class at Ruahine School, on average, consumes 2 boxes of milk a day. 

Imagine there are 30 cartons of milk in each box . 2 x 30 = 60 cartons of milk per day.
Imagine that there are 10 classrooms. 60 x 10 = 600 cartons of milk per week.

Classes have milk every school day.

There are 10 weeks in every term. 600 x 10 = 6000 per term.

There are 4 terms per year. 6000 x 4 = 24,000 cartons per year.

On average, how many cartons of milk will Ruahine School consume each school week, term and year?

On average, how many cartons of milk will Ruahine School consume over 10 school years? 24,000 x 10 = 240,000

If there are 5 schools in the Ruahine district, how much milk will be consumed over a 10 year period? 240,000 x 5 = 1,200,000

There are 100 schools in the Lower North Island, how much milk will they consume over 1 year, 10 years? 1 school consumes 24,000 cartons per year, then  24,000 x 100 = 2,400,000. Over 10 years 2,400,000 x 10 = 24,000,000

What percentage of the Lower North Island consumption will Ruahine School be responsible for in a year? 1%

How much milk will Ruahine School consume in a year if there were 7 classes? 60 x 7 = 420 per week, 420 x 40 weeks = 16,800 per year.  (Proof because  3 x 60 = 180, 180 x 40 = 7200.  7200 + 16800 = 24,000).

Well done to the Barrow family who were the first to answer this question correctly.  Thank you to all the other parents that helped their kids out with their learning too by sharing their thinking.  You guys ROCK!