Group 1 Activity

What is a triangular number?

• figurate numbers that can be represented by an arrangement of dots in a triangular shape

• number that can be shown as a pentagonal pattern of dots.

• number multiplied by itself

What is the value of seven squared?

• 94

• 49

• 14

• 75

What is a square number?

• number multiplied by itself

• Figurate numbers that can be represented by an arrangement of dots in a triangular shape

• A number that can be shown as a pentagonal pattern of dots.

What is the first 5 triangular numbers?

• 2, 4, 6, 8, 10

• 1, 3, 6, 10, 15

• 1, 5, 12, 22, 35

• 3, 6, 9, 12, 15

• 210

• 400

• 1275

• 120

Which one below is pattern 4?

• 
• 
• 

• 925

• 336

• 575

1, 5, 12, 22, 35..

The number sequence above is the first five numbers of........

• square numbers

• triangular numbers

• pentagonal numbers

• 92 is the 8th pentagonal number

• 92 is not pentagonal number