Decimals, Percents and Fraction.

In class we did $1.75 per lap or 20 laps for $30. how much per lap if you buy the $30.00 package?  If calculated, divide 20 by 30.  If you want to use the ratio table this is what it should look like....

1 person buys 6 laps.  3 people buy the 20 lap packages.  Estimate then calculate the total cost.



Tax in MB is 5% GST and 7% for PST.  Calculate the tax on  a t shirt with a $15 price tag.

40 shots. 26 hit right in the bullseye. Show this as a decimal, fraction and percent. Determine which is easier to explain. 

Dude make 23 out of 25 free throws. Lady make 18 out of 20. Write each as a fraction, decimal and percent.

Order of Operations

B-Brackets

E-Exponents

D-Division

Here is a picture

M-Multiplication

A-Addition

S-Subtraction

Show your thinking

e.g 1.2+3x4=

2+12=

14

Sorry it was late

In class we learned how to covert a fraction to a decimal . Remember what you do to the bodom you do to the top .

Like 100
-------
50 = 12.5 i think

fractions,percents and decimals

Today in class we had a short quiz on fractions, decimals, and percents.


After we finished the quiz we had to express some decimals into fractions.



0.7



0.67

how you do it is that decimals are over one and fractions are out of 100. so you have to times the bottom number by 100 and what ever you do to the bottom you do to the top.

so the answers are:


0.7x100=7 over 10


0.67x100=67 over 100


63 out of 160 between 40 and 50 percent. true or false. justify your thinking with out calculating


this was my answer

for homework we had to do pages 44 and 45 in the homework books

here is a link to help you
http://www.mathgoodies.com/lessons/vol4/challenge_vol4.html

Loading Strip, Ratio Table

Percent- means out of 100

eg. 30% means 30 out of 100 0r 0.30 or 30/100

How to make a Loading Strip

Percent on top

Number on bottom

Write the following percents as decimals

100% - 1

50% - 0.50

25% - 0.25

62.5% - 0.625

10% - 0.10

Using a loading strip model find:

50% of 45.80

Here's my answer.

Can you solve these questions?

25% of 50.00

10% of 72.40

What's your answer?

Ratio Table - is a Loading Strip turned sideways.

Find 75% of 16

Here's my answer.

Can you find these?

Find 69% of 90

Find 40% of 80

What's your answer?

Fractions, Decimals, Percents

In class today we learned that a

Fraction- is out of any whole #

e.g 1/2, 1/3, 1/4, 123/219

Decimal- is out of 1

e.g 0.5/1, 0.1/1, 0.001/1, 0.123/1, 0.2/1

Percent- is out of 100

e.g 50% 2% 25%

50/100 2/100 25/100

% means /100

Today we had to find out what 50% out of 10 was, 77% of 17, and 62.5% 24

For the rest of the class we worked on our textbooks pages 129-131

#1-3

Our homework for today is doing our homework booklets pages 40-41

Here is a video to help you.

Here is a game to http://nrich.maths.org/1249 .

TEST CORRECTIONS FOR MR. ISFIELD

15.NAGEENS PARENTS ARE FOM GUYANA AS A PRESENT.NAGEEN WANTS TO MAKE A FLAG OF THAT COUNTRY. NAGEEN PLANS TO MAKE THE FLAG 1M WIDE AND 60 CM HIGH. HOW MUCH GREEN MATERIALWILL NAGEEN NEED TO PURCHASE?DO NOT COUNT THE MATERIAL TO PUT IT TOGETHER GIVE YOUR ANSWER IN SQUARE CMS.

SORRY FOR NO PICS?!?!?!


16.TWO TRIANGLES HAVE THE SAME AREA.DO THEY HAVE THE SAME PERIMETER? VERIFY YOUR ANSWER?

ANWERS:15:7 SQURE CMS
16:YES

Chapter 3 review. Numbers 8-10

8. Q: Copy these line segments. Draw the

perpendicular bisectors using two different

methods. Measure the two parts of each

bisected line segment. Record each set of

measurements

A: For line segment "a)" I used the compass method, my bisector was at 3.6cm, my total length was around 7cm

For line segment "b)" I used the paper folding method, my total length was 8cm and the bisector was at 4cm

____________________________________________________________________

9. Q: A support must be placed under the pool

table at its centre. Make a sketch of the

pool table. Draw the position of the

perpendicular support. Label the support

and label the measures of the table lengths

on each side of the support.

A: The perpendicular bisector is at 117 cm.

____________________________________________________________________

10. Q: You draw a perpendicular bisector of

a 30-cm line segment. You then draw

a perpendicular bisector of one of the

bisected line segments

A:

a) the shortest length was 7.5cm

b) the shortest line segment compares to the original line as 1/4 of the entire length.

Chapter 3 Review 11-13

Draw the following angles. Draw the angle bisectors using 2 different methods. Measure two angles of each bisected angle. Record each set of angle measures.

11a) The angle is 36 degrees, cut the angle in half, and you should have 18 degrees for the result.

11b) The angle is 120 degrees, cut the angle in half, and you should have 60 degrees for the result.

An architect measures the angle of a roof to be 132 degrees. Draw the angle.

12a) 66 degrees

You construct an angle bisector of an 80 degree angle. You then construct an angle bisector of one of the resulting angles.

13a) 20 degrees
12b) 1 fourth of the original angle

number 16-17 page 117

The answers for #16 is A=bxh\2, then A=b(6m)xh(2m)\2, then the answer is 6m squared.

A=bxh\2, then A=5.2x5.3m\2, then the answer is 13.78m squared.

The answers for number 17 is bxh\2, then A=1.6x1.1\2, so the answer is 0.88m squared.

b) It is knot straight because of the river.

The Area of a Triangle

Every triangle is half of a parallelogram. We know the formula to find the area of a parallelogram is base times height. So the formula of a triangle is half of the area of a parallelogram . The formula of the area of a triangle is base times height divided by two.

The height of a triangle has a perpendicular line from the base to the opposite angle.

Here is a link for help on finding the area of a triangle.

Area of Triangles

Today in class we learned about area of a triangle.

First we drew a 4x6 rectangle on a centimetre grid.
Then draw a diagonal line from one corner to the opposite corner and cut along the line
We have made 2 triangles that has the exact same area.

We determined that not all triangles are half of a rectangle, but all triangle is half of a parallelogram.

We also determined this to be the formula

Then we did show you know in the textbook

A= BxH÷2

A= 3x3÷2

A= 4.5 cm2

A= BxH÷2

A= 4x6.5÷2

A= 13 cm2

This is a link about area of triangle

Here is a video about Area of Triangle

Pages 4-6 question and answers

Text Book ( 4-6)


4. Determine the area of each parallelogram. they are drawn on the cm grid paper.




A) if you look at A you can see that the base = 4 cm and the h = 1 cm so if you multiply 4 x 1 = 4cm*




B) if you look at B you can see that the base = 3 cm and the h = 3 cm so if you multiply 3x3 = 9 cm*








5. Draw each of the parallelograms on a centimetre grid paper. Check your answers using estimation.

A) b = 4 cm h = 5 cm

B) b = 3 cm h = 7 cm

6. Draw each parallelogram cm grid paper. Determine each area using the formula. Check your answer using estimation.

A) h = 6cm,b = 4cm  

B) h = 2cm,b = 4cm

Texbook (1-3)

1. Explain why the area of a rectangle and the area of a parallelogram made from the rectangle are the same. Include diagrams with your answer.

If you take the triangle and move it over to where it fits, it's still the same shape, just at a different angle.

2. Deepa determined the area of this parallelogram to be 5cm².

a) Deepa did 2.5 x 2 which is 5. Deepa was supposed to find the height which the height was 2 cm. b) b x h = 4 cm 2cm x 2cm = 4 cm²




3. These parallelograms are drawn on centimeter grid paper. What is the area of each parallelogram?


a) 3cm²

b) 6 cm²

Here is a link to practice with.