Gr 8 Term 2 Review

Integers

10

-22 - (-43)

23

20

4 -3(7 + 3)

-26

30

47 less than 21

-26

40

Arrange in Ascending Order 

-39 ; 84 ; -32 ; -2 ; 9

-39; -32 ; -3; 9 ; 84

50

Find the Lowest Common Multiple of 36 and 21

252

Exponents

10

Write in expanded form: (3y² +1)²

(3y² +1)(3y² +1)

20

2x³ . 7x⁴ . 2x³

28x¹⁰

30

(g⁵h²d)³

g¹⁵h⁶d³

40

21e⁸d³f⁰ / 7d²e⁴

3de⁴

50

[3(8xy) + 6w⁰xy] ÷ 10x

3y

Scientific Notation

10

Write in Scientific Notation: 39 000 000 

3,9 x 10⁷

20

Write in Standard Form: 

2,43 x 10⁴

24 300

30

Write in Scientific Notation: 

0,0004839

4,839 x 10^-4

40

Write in Standard Form: 

4,2 x 10^-8

0,000000042

50

Write in Scientific Notation AND Standard Form 

(2 Answers)

239,4 x 10³

Scientific : 2,394 x 10⁵

Standard: 239 400

Algebra

10

a + a + a + b + b + b

3a + 3b

20

3ay x 4az

12a²yz

30

4x + 7y + 2(4x) + 2xy

12x + 7y + 2xy

40

6x - 4y + 2 - 8y +2x +7

8x - 12y + 9

50

3(4x +2) - 7 + 3x

15x - 1

Problem Solving

10

An apple weighs (3x+1) kilograms, and a banana weights (4 - 2x). Find the sum of the weight of the fruit

x + 5

20

James is 4x+39 years old and Sarah is 23x. Find the difference between their ages

39 - 19x

30

By how much is 5 more than 7(-8)

61

40

By how much is -5 less than the product of 2 and 3

11

50

Cameron runs around the school running track 4 times. If each track is 3a + 4b meters long; determine how far he ran 

12a + 16b