Math 8 Sem 2 Cycle 4

Ratios

100

What do you call a ratio that compares two things?

part to part

200

What do you call a ratio that compares one thing to the total things in a set?

part to whole

300

What do you call a ratio that compares 3 or more things?

part to part to part

400

A box of smarties has 10 red, 7 blue, 3 green, 4 brown, 6 yellow and 5 purple. What is the ratio of green to purple?

3:5

500

A box of smarties has 10 red, 7 blue, 3 green, 4 brown, 6 yellow and 5 purple. What is the ratio of red to total smarties?

10:35 OR 2:7

Equivalent Ratios

100

Write 2 equivalent ratios for 1:2

2:4, 3;6, etc.

200

Write 3 equivalent ratios for 2:5

4;10, 6:15, 8:20, 20:50, 200:500, etc.

300

Write 4 equivalent ratios for 60:6. 2 must be larger and 2 must be smaller

30:3, 10:1, 20:2, 70:7, 80:8, 120:12, 600:60, etc.

400

2:3 = 18:x

x = 27

500

x:49 = 18:14

x = 63

Equations with Distributive Property

100

2(x + 3) = 8

x = 1

200

5(x - 2) = 20 

x = 6

300

7(x - 9) = 49

x = 16

400

4(2x + 5) = 60 

x = 5

500

6(4x - 3) = 78

x = 4

Sem 1 Review

100

(-8) + 3 x (-9) 

-35

200

Estimate the square root of 37

6.1

300

c = 9cm

b = 5cm

a = ?

a = 7.5cm

400

3/7 x 28/15

4/5

500

What is the surface area of a right angle triangular prism, with sides of 6cm , 8cm , 10cm, and a height of 5cm. 

168cm²

Mr Erickson Choice

100

(-4) - 8

-12

200

Which second year player just broke the San Jose Sharks record for most points in a season?

Macklin Celebrini

300

Have you been watching the weather? How warm is it supposed to be on Tuesday this week?

20 degrees!!

400

Which sport did Mr Erickson coach for the first time this year?

hockey

500

What do you call a triangle that has all sides equal?

an equilateral triangle