Maths Year 9 Easter Week 1

Revision

Let's go down memory lane. Shall we?

Multiple Choice

Convert 128 to binary

• 10000000
• 01111110
• 10000001
• 11001100

Multiple Choice

11000₂ + 111₂ =

• 11111

• 11011

• 11101

• 10111

Multiple Choice

101₂ + 111₂ =

• 1000₂

• 1001₂

• 1011₂

• 1100₂

Multiple Choice

When adding, if the sum is equal to your base it is okay to write it down.

• True

• False

Multiple Choice

After converting, you drop the remainder and carry the other digit.

• True

• False

Multiple Choice

in

• 10

• 2.5

• 2

• 20

Multiple Choice

Identify whether the given relation is Direct or Indirect Proportion?
The number of workers on a job and the time to complete the job

• Direct Proportion
• Indirect Proportion 

Multiple Choice

Which of the following is an irrational number?

• 0.333

• $$\sqrt{8}$$

• $$\sqrt{49}$$

• $$\frac{5}{22}$$

Multiple Choice

m - 25.4 = 105

• 130.4
• 79.6
• 131
• 80

Multiple Choice

Convert 65 to binary

• 01100001
• 00100001
• 01000001
• 00100101

Multiple Choice

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

Multiple Choice

What type of number is a non-repeating, non-terminating decimal?

• irrational

• prime

• rational

• imaginary

Multiple Choice

6z + 3 -4z = 9

• z = 3
• z = 60
• z = 30
• z = 1

Multiple Choice

Identify whether the given relation is Direct or Indirect Proportion?
Area of cultivated land and the crop harvested 

• Director Proportion
• Indirect Proportion

Multiple Choice

4 = 2(x + 3)

• 1/2
• 7/2
• -1
• 5

Multiple Choice

Which is the best rational approximation for  $$\sqrt{55}$$  ?

• 7.5

• 27.5

• 5.5

• 11.0

Multiple Choice

9c-3c=48

• c=9
• c=3
• c=4
• c=8

Multiple Choice

• 42

• 7

• 3

• 38

Multiple Choice

3y+4y+6=20

• y=2
• y=-2
• y=4
• y=3

Multiple Select

The number  $$-\sqrt{16}$$  belongs to what number system(s)?

• natural number

• whole number

• integer

• rational number

• imaginary number

Multiple Choice

10(h+1)-4=76

• h=10
• h=4
• h=7
• h=76

Multiple Choice

If x and y are in an inverse variation then which of the following is correct?

• x - y = constant
• x + y = constant
• xy = constant 
• x⁄y is constant 

Multiple Choice

-2x-7+3x=10

• x=-2
• x=3
• x=10
• x=17

Multiple Choice

Which statement about  $$\sqrt{15}$$  and  $$\pi$$  is true?

• Both numbers can be categorized as rational.

• Both numbers can be written as decimal numbers that neither terminate nor repeat.

• Both numbers can be written as fractions with integer numerators and denominators.

• Both numbers can be categorized as natural numbers because they are positive.

Multiple Choice

5x - 4 + 2x = 3

• 1
• 2
• 3
• 4

Multiple Choice

Who are these lovely people?

• The Flintstones
• the flinstones
• flintstone family
• i have know idea give me the answer

Multiple Choice

Which decimal appears to be a rational number?

• 2.14285714285714...

• 3.14159265358979...

• 4.79583152331272...

• 5.56776436283002...

Multiple Choice

If x and y are in an direct variation then which of the following is correct?

• x - y = constant
• x + y = constant
• xy = constant 
• x⁄y is constant 

Multiple Choice

The value of π cannot be written as the ratio of two integers. Which statement is true?

• π is a rational number.

• π is an irrational number.

• The decimal expansion of π terminates.

• The decimal expansion of π repeats.

Multiple Choice

• 256

• 4

• 64

• 128

Multiple Choice

Which point best represents  $$\sqrt{10}$$  on a number line?

• point A

• point B

• point C

• point D

Multiple Choice

• 10
• 12
• 15
• 20

Multiple Choice

Between which two numbers does  $$\sqrt{11}$$  lie on a number line?

• 4 and 5

• 5 and 6

• 10 and 11

• 3 and 4

Multiple Choice

Which best represents the position of  $$\sqrt{8}$$  on the number line below?

• Point P

• Point Q

• Point R

• Point S

Multiple Choice

• a)
• b)
• c)
• d)

Multiple Choice

Read the question carefully:

• 6.24

• 7.68

• 8.31

• 9.43

Multiple Choice

• 35

• 5

• 45

• 49

Multiple Choice

A farmer has enough food to feed 20 animals at his farm for 6 days.  How long the food lost if there were 10 more animals in the farm>

• 5 days
• 4 days
• 6 days
• 3 days

Multiple Choice

x and y very inversely.  When x = 15 then y = 6.  What will be the value when x = 9?

• 10
• 15
• 54
• 135

Multiple Choice

• 20

• 4

• 5

• 24

Multiple Choice

6 pipes fill a tank in 120 minutes, then 5 pipes can fill it in _______ minutes

• 100 
• 174
• 144
• 108

Multiple Choice

Convert 37 to binary

• 00100101
• 00100011
• 00100111
• 01000101

Multiple Choice

Say 'TRUE' or 'FALSE'
The population of a country and the area of land per person are inversely proportional

• TRUE
• FALSE

Multiple Choice

• 147

• 3

• 63

• 441

Multiple Choice

• 125

• 5

• 25

• 100

Multiple Choice

• 40

• 4

• 400

• 80

Multiple Choice

• 48

• 3

• 144

• 100

Multiple Choice

Convert 00010001 to decimal

• 17
• 27
• 37
• 47

Multiple Choice

• 108

• 4

• 20

• 180

Multiple Choice

Convert 11111111 to decimal

• 255
• 245
• 235
• 225

Multiple Choice

Convert 11001100 to decimal

• 224
• 134
• 104
• 204

Multiple Choice

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

• 35

• 18

• 60

• 50

Multiple Choice

Solve the proportion

• 4

• 6

• 9

• 44

Multiple Choice

If a binary number ends with a 1, it must be...

• An odd number
• An even number
• A prime number
• The number 12

Multiple Choice

What are the only two numbers you can use in binary?

• 0 and 1
• 1 and 2
• 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
• 1, 2, 4, 8, 16

Multiple Choice

What is the point of binary?

• It represents how computers interpret electrical signals

• Because we like to make you do extra math

• It is fun

• Because it describes star systems

Multiple Choice

How is our number system different from the binary system?

• Our number system is base 5; the binary system is base 3

• Our number system is base 10; the binary system is base 2

• Our number system is base 10; the binary system is base 1

• Our number system is base 100; the binary system is base 2

Multiple Choice

Your computer's code for the letter A is 01000001. Can you infer what the letter B would be?

• 10010
• 01000010
• 01010110
• 00000001

Multiple Choice

Which of the following numbers is a power of 2?

• 6
• 16
• 10
• 20

Multiple Choice

What is the main function of binary code?

• Turning on switches to off

• Allowing computers to represent and store data

• Providing a gateway into higher mathematics

• Allowing computers to interact with humans