Surds and Indices Year 9

This comes from Understanding Year 9 and 10 maths (Accelerated Maths Learning)

Surds and Indices Scanned Copy

Puzzle

Mr Golan asked the class to see if they could find the sum of the first 50 odd numbers. As everyone settled down to their addition, Julia ran to him and said, "The sum is 2,500." Mr Golan thought, "Lucky guess," and gave him the task of finding the sum of the first 75 odd numbers. Within 20 seconds, Julia was back with the correct answer of 5,625.
How did she do this?

FACEBOOK QUESTION - YEAR 10 AND YEAR 9

Thanks for bringing this question to us. At first I thought it was obvious but........Facebook Question 2

Fast Maths Trick - thanks to Jacob.

THANKS JACOB! (Year 6)

Calendar

How about that! Apparently this July there are 5 Fridays, 5 Saturdays and 5 Sundays. It only happens every 823 years. Am I right? Let me know.

The Monty Hall Problem

My Year 6's have asked me to explain this. The problem goes like this. There are three boxes. Only one of them has a prize. After you have picked a box, the game show host opens one of the other boxes that has nothing in it (the game show host knows what is in each of the boxes). He then gives you the chance to switch boxes or not. What do you do?

The Monty Hall Problem
(Make sure you have watched the YouTube video first)


The Monty Hall Problem -

Year 9 27th April

Hi Everyone

Not so difficult to find me, is it? Make sure for homework today, you make mathsonline.com.au passwords. You need to:

www.mathsonline.com.au (you can click this link).

Go into the parents area and make a family account. It is free and you can even sign up your siblings.

They will then email you a password (put your email account in)

You then have to go back in and get a username and password.

It shouldn't be difficult!

Once in, login to the student area and try and find

Year 9 and 10

Algebra

Indices

Multiplication of indices

Do the lesson and perhaps if time, the worksheet.

Also, make sure you try the two Make 24 puzzles.

Year 9 and Year 10

Mixture word problems and time, distance, speed problems from YouTube

Make 24

The second in our Make 24

Rules:

Use each number once only in any order

Use any of the 4 operators (multiplication, division, subtraction, addition)

You may use brackets

1 3 4 6 = 24

The answer is here. Do NOT look until you have tried for awhile!