Binary Decimal Numbers

Convert 00010001 to decimal

• 17

• 27

• 37

• 47

Convert 37 to binary

• 00100101

• 00100011

• 00100111

• 01000101

Convert 11111111 to decimal

• 255

• 245

• 235

• 225

Convert 11001100 to decimal

• 224

• 134

• 104

• 204

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

• An odd number

• An even number

• A prime number

• The number 12

Tags

CCSS.2.OA.C.3

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

Tags

CCSS.4.NBT.A.2

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

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

1101 in binary represents what number in the decimal system?

• 4

• 7

• 13

• 20

Convert 10001 from binary to decimal.

• 17

• 27

• 37

• 47