## Thursday, January 26, 2012

### Nikko Scribe page 91 textbook

### Masynne's Square Root Scribe Post

For each of the following, use perfect squares to estimate the square root to the one decimal place.

A) Identify a whole number with a square root between 8 and 9.

## Sunday, January 22, 2012

### Patricia`s textbook questions

5.2 m

19 Estimate the square root of 160 100. Explain how you determined your estimate

160=40

100=10

40x10=400

17 Carmel want to mount an 18cm by 18cm square on a square board that is four times the area of the picture.

a) What is the area for the picture.

18x18=324cm2

b)What is the area of the board

324x4=1296cm2

c)What are the dimensions of the board.

1296=36cm

### Aicelle's Textbook Questions

*n*if the solution for √56

*n*also a natural number?

### TextBook Questions pages 98-100 #6, 15, 17 Dom817

An example of a whole number that has a square root between 9 and 10 is 82

15. Order the following numbers from least to greatest: 7, square root 46, 5.8, square root 27, 6.3

Sqaure root 27, 5.8, 6.3, square root 46, 7

17. Carmel wants to mount an 18 cm x 18 cm square picture on a square board that is four times the area of the picture.

a) What is the area of the picture?

b) What is the area of the board?

c) What are the dimensions of the board?

a) 324cm squared

b) 1296cm squared

c) 36 cm squared

### Ashley's Textbook Questions

10. Kai uses an entire can of paint on a square backdrop for the school play. The label on can states that one can cover 27M2 of wall surface. Estimate the backdrop's side length to one decimal place.

Answer: 5.2 m

12. While shopping online, Ji Hun finds a square rug with an area of 11m^{2 . }He needs to know if it will fit in his 4M x 5M bedroom.

A) Estimate the side length of the rug, to one decimal place.

√11= 3.3m

B) Will the rug fit? Explain.

Yes, it will fit because the side of the rug is smaller than the shorter side of the room.

19. Estimate the square root of 160 100. Explain how you determined your estimate.

Answer: 400

### Textbook questions

### Joseph's Textbook Questions

b)

c)121 is closer because it is much closer to 115m squared.

16. A fitness centre will install a square hot tub in a 6m x 6m room. They want the tub to fill no more than 75% of the room's area.

a)What is the maximum area of the hot tub?

b) What dimensions, to a tenth of a metre will the fitness centre order from the manufacturer?Explain

### Ace's Textbook Questions Post

Textbook Questions

11. A square has an area of 20cm 2

Measure to the nearest tenth of a centimeter.

14. Alex is thinking of a number.

Page 100

7, square root of 46, 5.8, square root of 27, 6.3

1. Explain the Pythagorean relationship;

2. Solve for the missing side length.

3. Is this a right triangle? Prove it.

### Gurpreet's Textbook Questions

*Textbook questions #10,#12 and#17*

*#10***Kai uses an entire can of paint on the square backdrop for the school play. The label on the can states that one can cover 27m2 of wall surface. Estimate the backdrop's side length to one decimal place.**

- You make a number line
- Find the halfway point and find what number it is
- Add your number and find where it goes

*#17*

*Carmel want to mount an 18cm by 18cm square on a square*

*board that is four times the area of the picture.*

*a) What is the area for the picture.*

*b)What is the area of the board*

*c)What are the dimensions of the board.*

- To get the answer for a) you have to multiply 18cm by 18cm and you get the answer
- To get the answer for b) you mulitply the area of the board which is 324 by 4 because the area of the board is 4 times of the picture
- To get the dimension of the board you find the square root of 1296cm which is 36cm. You have to do this in your calculator.

**#12**

**While shopping online, Ji Hun finds square rug with an area of 11 m2. He needs to know if it will fit in his 4 m times 5 m bedroom**

**a) Estimate the side lengths of the rug to one decimal place.**

**b) Check your estimate with a calculator**

**c) Will the rug fit? Explain.**

This Pythagorean Relationship means that the legs of the right triangle together equals to the hypotenuse, which is the longest side length of the right triangle. If the side lengths of the right triangle were not squared you would have to square them.Squared means to times it's number by it self, so it would be 6x6. So now you multiply the numbers, so oyu would multiply them 6x6 equals 36 and the other leg and together it would equal the hypotenuse.

### Textbook Questions

**PARENT QUIZ:**

## Saturday, January 21, 2012

### Kenzie's Textbook questions

**4) Estimate the square root of each number to one decimal place. Check with a calculator.**

**6) What is an example of a whole number that has a square root between 9 and 10**

**7) Identify a whole number with a square root between 11 and 12**

### Rose's Textbook Questions

10. Kai uses an entire can of paint on a square backdrop for the school play. The label on can states that one can cover 27 m squared of wall surface. Estimate the backdrop's side length to one decimal place.

Answer: 5.2 m

14. Alex is thinking of a number.

The number has a square root between 7 and 8, and it is a multiple of 12.

a. What number could he be thinking of?

b. is there more than one answer? Explain.

No, because 60 is the only number that has a square root between 7 and 8 and is multiple of 12.

19. Estimate the square root of 160 100. Explain how you determined your estimate.

Answer: 400

Here is a video about square root

Here is a link to help you in:

Square root of perfect square

1. Pythagorean relationship is the sum of the square attached to the legs is equal to the square attached to the hypotenuse. It's also the formula to find the missing side and determine wether it's a right triangle or not.

2. Solve for the missing side length.

3. Is this a right triangle? Prove it!!!