Grade 8 Revision Game

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100

7 men can complete a work in 52 days. In how many days will 13 men finish the same work ?

28 days

200

Factorise x²+10x+16

(x+8)(x+2)

300

Expand and simplify (5x + 6)(8x − 4) 

40x² + 28x − 24

400

Simplify 16p² / 28 p 

4p / 7

500

The sum of two numbers is 18, and the product of these two numbers is 56. What are the numbers?

4 and 14

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100

y is inversely proportional to x. Given that y = 12 and x = 6. Find the value of y when  x = 8.

y = 9

200

Factorise 10a - 20

10(a-2)

300

Expand and simplify (8b − 1)(5b − 5) 

40b² − 45b + 5

400

Simplify x² + 8x + 12 / x² + 3x − 18 

x + 2 / x − 3

500

The difference of the squares of two consecutive even integers is 68. What are these numbers?

16 and 18

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100

The sum of two numbers is 18 and their difference is 2. Find the numbers.

8 and 10

200

Expand and simplify (3x + y)²

9x² + 6xy + y²

300

Factorise 7m² + 6m − 1 

(7m-1)(m+1)

400

Simplify x² − 11x + 18 / x² + 2x − 8 

x − 9 / x + 4

500

The perimeter of a rectangular pool is 56 meters. If the length of the pool is 16 meters, then find its width.

12 meters

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100

Simplify 10x + 20y + 30x + 5y

40x + 25y

200

Factorise 2x²+7x

x(2x+7)

300

Factorise 3k² − 10k + 7 

(3k − 7)(k − 1)

400

Solve using elimination 

−4x + 9y = 9  

x − 3y = −6 

(9,5)

500

Solve n² + 3n − 12 = 6

(3, -6)

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100

Expand and simplify (x + 1)(x − 3) 

x² − 2x − 3

200

Factorise p² - 2p - 15

(p - 5)(p + 3)

300

Factorise 10m² + 23m + 6 

(m + 2)(10m + 3)

400

Solve using substitution

y = 5x − 7 

−3x − 2y = −12

(2,3)

500

Solve 15a² − 3a = 3 − 7a 

(1/3, -3/5)