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Posts tagged with areas

What fraction of the square is the pink triangle?

April27

Using your knowledge of Areas, work out what fraction the pink triangle is of the square (answer soon in post support):

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You need to build a pen for your dog…

September29

‘Sadie’ is such a lovely dog – playful, cuddly and, well, just cute! But, your parents are going out to buy 24 meters of fencing to make a pen for dear Sadie. What will you do while they are out shopping? Why, play with Sadie of course? No, no, no – you have to put […]

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Areas Game helps Math understanding

August23

A great little game for 2 or 3 players and easy to organise in the classroom! Each player chooses a colour pencil or pen/highlighter they will use in the game. Players take turns rolling the dice, using the numbers that they rolled to draw the perimeter of a rectangle or square & writing the area […]

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Circle Area

May28

As we saw in the last posting, the area of a circle is given by; So, to find the area of a circle we multiply pi (3.1415…) x the radius squared. Our answer will be something squared. Another way to think of area is how many square tiles would fit the shape, etc. In the […]

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Finding Areas – a Quick Summary

May27

Here are the most common areas which students are required to calculate. Note that areas are ALWAYS expressed as something squared (such as squared metres):

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Find the Value of X (diagram not to scale)

February2

No suggested solutions yet!

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Post Support

Largest number between o and 1 million which does not contain the ‘n’ is 88

 

Rotation SAT Problem: Answer: 4 (see: https://www.youtube.com/watch?v=FUHkTs-Ipfg)

 

Which number has its letters in alphabetical order? Answer: F O R T Y

Hidden Rabbit? Clue: check the trees

How long for the stadium to fill? 45 minutes.

Where are you? the North Pole

Prize Object Puzzle: If Sue does not know where the prize is in the first question, it can’t be under the square. She must have been told it is under another shape. Apply this same logic to Colin. It is then obvious that the prize cannot be under a yellow object. That helps Sue eliminate her yellow shapes. Got the idea?

Algebra Puzzle: Answer = 1

Popular Math Problems Answers: 1, 1

Number of tabs? According to Lifehacker, the ideal number of tabs you should have open is nine. Yes, a single digit. To some, this is like playing a piano and only using a fraction of the notes!

Worst Graph? Where to start. What a visual mess and even some of the lines merge and are impossible to follow. A graph is a visual display of data, with the goal to identify trends or patterns. This is a spider’s web of information which fails to show a clear pattern at all. Solution? Well, different colors would help, or why not group in two or three graphs where trends are similar?

Number of different nets to make a cube is eleven – see this link

Homework Puzzle; The total value of the counters is 486, so halve this to get 243. Now, arrange the counters to equal this amount twice.

The graph on the left (Coronavirus) is for a time period of 30 days, while the one on the right (SARS) is for 8 months! Very poor graphical comparison and hardly relevant, unless it is attempting to downplay the seriousness of the coronavirus?

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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