Mathematic review Grade 8

Which of the following is the correct series for Fibonacci number?

• 0,1,1,2,3,5,8,13

• 0,1,2,3,5,8,13

• 0,1,1,3,5,8,13

• 0,1,1,2,3,5,7,13

Which of the following is not an example of irrational number?

• √2

• √16

• Pi

• Phi

 $10^{-2}×10^{-2}\ =\ ?$  

• 0.01

• 0.001

• 0.1

• 0.0001

Which of the following is the correct scientific notation of 3406? 

•  $34.06×10^{-3}$  

•  $34.06×10^3$  

•  $3.406×10^3$  

•  $3.406×10^{-3}$  

Which of the following numbers are perfect square?

• 100

• 400

• 50

• 82

 $\ \sqrt{120\ }=?$  

• 9.32

• 7.48

• 10.95

• 12.01

There is a total of 27 people. The ratio of those who chose football to those who chose archery is 4 : 5. How many chose football?

• 12

• 13

• 15

• 9

45% of 40 students chose archery. How many students chose archery in that group?

• 20

• 15

• 40

• 18

Which is the equivalent ratio of 12:15 ?

• 3:4

• 5:4

• 8:10

• 2:3

20% of 50 = ?

• 10

• 8

• 20

• 15