representing numbers (lesson 1 plenary)

What is the meaning of the keyword 'Binary'?

• A system of numerical notation that has 2 as its base and uses only 0 and 1.

• A system of numerical notation that has 10 as its base and uses digits from 0 to 9.

• A programming language used for web development.

• A type of computer virus.

What is the meaning of the keyword 'Bit'?

• A basic unit of information in computing and digital communications, representing a binary value of 0 or 1.

• A type of computer virus.

• A programming language.

• A hardware device used for storage.

What do we call these symbols? (a b c d e f g h i j k l m n o p q r s t u v w x y z)

• letters

• numbers

• shapes

• colors

How many of these symbols (letters) are there?

• 26

• 24

• 30

• 32

What do we call these symbols: 0 1 2 3 4 5 6 7 8 9?

• digits

• letters

• shapes

• colors

Why do we use 10 digits?

• Because we have 10 fingers to count with.

• Because there are 10 planets in the solar system.

• Because 10 is the largest number.

• Because ancient clocks had 10 hours.

What is the length of this number 314?

• 3 digits

• 2 digits

• 4 digits

• 1 digit

Can you give another example of a 3-digit number?

• 123

• 5

• 89

• 1000

How many 3-digit numbers can there possibly be?

• 1000

• 900

• 999

• 899

What do we call these symbols: 0 and 1?

• binary digits.

• prime numbers.

• hexadecimal values.

• Roman numerals.