1Th/vwo Ch 6 Ratio-show what you know!

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 1

Ch 6 Ratio

Rounding off this Chapter, you'll get some tasks,

to show what you've learned by now.

A little explanation, before and after the task, is also given,

to refresh your memory.

Get organised first...

Take before you:

+ pencil, pen and eraser

+ your Notebook 

+ textbook p.173 and further

Task 1:   Scale task.

Posters are made for the schoolparty.

A beetle (kever) is drawn by you.

The picture is 110 cm long. The beetle is 0.55 cm long.

Key in the right scale in the next slide.

1. 1 : 200
2. 200 : 1
3. 1 : 20
4. 20 : 1

Solution Scale task:

The picture is 110 cm long. The beetle is 0.55 cm long. The key question is:

.... cm in the drawing is  ... cm in reality

Let's calculate how many times 0.55 cm fits in 110 cm.

110 : 0.55 = 11000 : 55  

As 55 fits two times  in 110, it fits two hundred times in 11000

So, the scale is         200 : 1           

Task 2: 

Send in a pic of your calculation (the ratio table!).

Key in the discount (reduction).

Solution Task 2:

Task 3:

.05

lKey in your answer in the next slide.

How good is your understanding about ratio tables now?
On a scale of 1 to 10.

However,

+ how high of how low your level of understanding is

+ it will not have a follow up in the form of a test 

+ you have taken enough tests already, so

+ we can easily skip this one

+ for Ch 7 there will be a test, all right.

Homework time

Now finish the Homework for today.

1. make it

2. correct with Solutionsbook

3. take pics and

4. send in in GC