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

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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.

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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.

Order of operations

B-Brackets

E-Exponents

D-Divide

M-Multiply

A-Addition

S-Subtract

Here are some examples;

2+4÷2x6= 6-2÷2=

2+2x6 = 6-1 =

2+12 = 5 =

14 =

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Here is a video to help you.

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For our home work,

we had to do some problems;

1. Q. Annie has been asked to calculate 1.7 + 6 ÷ 2. She claims the

answer is 3.85. Do you agree? Explain why or why not.

1. A. I do not agree. Because if the question is 1.7+6÷2, you would have to divide first, heres how it would look if you did; 1.7 + 6 ÷ 2 =

1.7 + 4 =

5.7 =

2. Q. Put brackets in the following expression to get the largest value

possible. What problem solving strategy did you use?

(3 × 2.8) + 6.4 ÷ 4. I used order of operations to solve the problem.

2. A. Red= Answer

3. Q. Create a problem that could be solved using the following

expression.

2.5 + 1.25 + 5 × 1.6

3. A. How much money will I need if I need to buy an Apple pie[$2.5], Bottle of coke[$1.25], and 5 chocolate bars[$1.6 ea.]?

How to do #7 on the test

[Question]From the origin, where would you move to plot the ordered pair (4,0)

a. up 4 units c. left 4 units

b. right 2 units d. down 4 units [Answer] B

For extra help click on this