Intro to Binary Numbers

Intro to Binary Numbers

Open Ended

Discuss with your partner about how we count.

Use a complete sentence to answer this question. In your own words, what numbers do we use to count?

The Decimal System

In math, 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 are base ten numerals.

We can only count to nine without the need for two numerals or digits.

All numbers in the number system are made by combining these 10 numerals or digits.

Multiple Choice

How many numbers do we use to count in base 10?

• 2

• 9

• 10

• 100

Multiple Choice

What are the numbers we use in counting base 10?

• 1,2,3,4,5,6,7,8,9,10

• 0,1,2,3,4,5,6,7,8,9

We use "Base 10" every day ... it is our Decimal Number System.

Multiple Choice

How many mumbers do we use to count in base 2?

• 2

• 3

• 1

• 9

Multiple Choice

What is binary?

• A sequence of 1's and 0's

• The way a computer speaks

• Useless code that's no longer used

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

Odd and Even Numbers in Binary

A number expressed in the binary numeral system is ...

It is odd if its last digit is 1

Examples: 0011 = 3, 0101 = 5, 0111 = 7, 1001 = 9

it is even if its last digit is 0

Examples: 0010 = 2, 0100 = 4, 0110 = 6, 1000 = 8

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

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

A bit is 

• a numerical label assigned to each device.
• the smallest unit of data in a computer.
• a keyboarding term for typing.
• is a numeral system made up of 16 symbols.

Multiple Choice

Computers can only understand 0s and 1s.

• True
• False

Multiple Choice

Binary bits are typically in groups of 8.
8 bits makes a 

• byte
• bite
• mouthful
• big number

Multiple Choice

0 and 1 are binary digits. We call the individual numbers

• bidgets
• cutsies
• bitties
• bits

Multiple Choice

An electrical circuit that is on, or lit up, is represented by a

• 0
• 1

Multiple Choice

Which of these is NOT an example of binary?

• on or off
• true or false
• yes or no
• head, shoulders, knees, or toes

Multiple Choice

A binary system is a way of representing data with...

• bicycles
• lots of numbers
• only 2 options
• in black and white

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

How would you write the number 2 in binary code?

• 0002

• 0020

• 0001

• 0010

Multiple Choice

How many digits are in the decimal number system?

• 10
• 9
• 15
• 16

Multiple Choice

A bit is

• a numerical label assigned to each device.

• the smallest unit of data that can be understood by a computer.

• a keyboarding term for typing.

• is a numeral system made up of 16 symbols.

Multiple Choice

Binary is made up of which numbers 

• 3 and 4.
• 2 and 3.
• 1 and 2.
• 0 and 1.

Multiple Choice

Computers, like all electrical devices, can only understand 0s and 1s because they represent either electricity flowing in a circuit or no electricity flowing...on or off.

• True

• False

Multiple Choice

There are 8 bits to one byte

• True
• False

Multiple Choice

Each 1 and 0 represented in binary is called a bit

• True
• False

Multiple Choice

What is 3 in binary?

• 0100
• 0001
• 0101
• 0011

Multiple Choice

What is 4 in binary?

• 0100
• 0001
• 0101
• 1100

Multiple Choice

Binary uses 1’s & 0’s to represent data

• True
• False

Multiple Choice

Binary uses electrical signals

• True
• False

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 is 12 in binary?

• 0010
• 1010
• 1100
• 1111

Multiple Choice

1101 in binary represents what number in the decimal system?

• 4

• 7

• 13

• 20

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

What type of test is most similar to binary?

• An essay test
• Multiple choice
• True or False
• Fill-in-the-blanks

Multiple Choice

What is binary also known as?

• Base 1

• Base 2

• Base 3

• Base 10

Multiple Choice

Convert this to a decimal number

• 13
• 12
• 10
• 8

Multiple Choice

Which represents the number 0 in binary?

• 0

• 1

• 10

• 100

Multiple Choice

How do you write the number 10 in binary?

• 1010

• 11

• 1001

• 1000

Multiple Choice

How would you write the number 4 in binary code?

• 0100
• 0000
• 0001
• 0010

Multiple Choice

8 bytes = 1 bit

• TRUE
• FALSE

Multiple Choice

How would you write the number two in binary?

• 1001
• 0001
• 0000
• 0010

Multiple Choice

What is the point of binary?

• It represents how computers interpret electrical signals
• Because we like to make you do extra maths ;-D
• For the lulz
• Because it describes star systems

Multiple Choice

Which of these is the correct sequence for the place values for binary numbers?

• 1, 2, 4, 8, 16, 32, 64, 128
• 1, 2, 4, 6, 8, 10, 12, 14, 16
• 1, 2, 3, 4, 5, 6, 7, 8
• 0, 1

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 kind of 'base' system is binary known as?

• Base 12

• Base 8

• Base 2

• Base 10

Multiple Choice

Represent the number in binary: 15

• 1100

• 1101

• 1110

• 1111

Multiple Choice

Represent the number in decimal: 1110

• 12

• 13

• 14

• 15

Multiple Choice

Represent the number in binary: 13

• 1100

• 1101

• 1110

• 1111

Multiple Choice

Represent the number in decimal: 1100

• 12

• 13

• 14

• 15

Multiple Choice

Represent the number in binary: 6

• 0100

• 0101

• 0110

• 0111

Multiple Choice

Represent the number in decimal: 0101

• 2

• 3

• 4

• 5

Multiple Choice

Represent the number in binary: 4

• 0100

• 0101

• 0110

• 0111

Multiple Choice

Represent the number in decimal: 0011

• 2

• 3

• 4

• 5

Multiple Choice

Represent the number in binary: 2

• 0000

• 0001

• 0010

• 0011