NZ Level 2

Describe a pattern (add/sub)

Lesson

If you saw a list of numbers like $7$7, $10$10, $13$13, $16$16, $19$19, you might notice that there is a **pattern** to the numbers. To get from each number to the next, you need to add $3$3. We say that the numbers are **increasing by $3$3**, or that you are **adding $3$3 each time.**

This is what we call a **description of a pattern**. Watch the video below to learn more about describing patterns!

Now that we've learnt how to describe a pattern, try some questions yourself!

Describe the number pattern below.

Which of the options below best describes the pattern?

$4$4 $6$6 $8$8 $10$10 $12$12 The numbers are decreasing by $3$3 units.

AThe numbers are decreasing by $2$2 units.

BThe numbers are increasing by $2$2 units.

CThe numbers are increasing by $1$1 units.

DThe numbers are decreasing by $3$3 units.

AThe numbers are decreasing by $2$2 units.

BThe numbers are increasing by $2$2 units.

CThe numbers are increasing by $1$1 units.

D

Complete the pattern:

$12$12, $26$26, $40$40, $\editable{}$, $\editable{}$, $\editable{}$

What is the rule for finding the missing values?

Add $28$28.

AAdd $14$14.

BAdd $15$15.

CAdd $13$13.

DAdd $28$28.

AAdd $14$14.

BAdd $15$15.

CAdd $13$13.

D

Write the next numbers in the pattern about the number of matches used to make the pattern.

$6$6, $\editable{}$, $\editable{}$, $\editable{}$, $\editable{}$, $\editable{}$

Which of the following best describes the pattern above?

The numbers are decreasing by $5$5.

AThe numbers are increasing by $4$4.

BThe numbers are increasing by $5$5.

CThe numbers are increasing by $3$3.

DThe numbers are decreasing by $5$5.

AThe numbers are increasing by $4$4.

BThe numbers are increasing by $5$5.

CThe numbers are increasing by $3$3.

D

Find rules for the next member in a sequential pattern.