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Algebra, NAP-A4-NC01

Flynn is making a pattern with soccer balls.
 

 
This table shows the number of balls he needs for each shape in the pattern.
 

  Pattern # 1 2 3 4 5
  Number of balls 1 4 9 16 ?

 
How many balls will Flynn need for Pattern #5?

`17` `23` `25` `30`
 
 
 
 
Show Answers Only

`25`

Show Worked Solution

`text(Pattern #5 is)`

`:. 25\ text(balls needed for Pattern #5.)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 6, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-A4-CA21

A stack of 4 cups is 16 cm tall.

A stack of 7 cups is 25 cm tall.
 

  
Which rule can be used to work out the height, in centimetres, of a stack of `n` cups?

`7n - 24` `7n - 12` `3n + 4` `3n + 7`
 
 
 
 
Show Answers Only

`3n + 4`

Show Worked Solution

`text(7 cups = 25 cm)`

`text(4 cups = 16 cm)`

`=> 3\ text(extra cups add 9 cm)`

`=> 1\ text(extra cup adds 3 cm)`

 

`:. 3n + 4\ text(is the rule.)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 8, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-B4-CA16

Identical sticks are used to make this pattern of hexagons.
 

 
In this pattern the rule for the number of sticks is

 
5 × number of hexagons + 1
 
6 × number of hexagons − 1
 
5 × number of hexagons
 
6 × number of hexagons
Show Answers Only

`text(5 × number of hexagons + 1)`

Show Worked Solution
`text(Sticks in:     1 hexagon)` `=6`
`text(2 hexagons)` `=11`
`text(3 hexagons)` `=16`

 

`:.\ text(Sticks used = 5 × number of hexagons + 1)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 8, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-E4-CA25 SA

Bill creates a pattern of branches and nodes on a computer.

 

 
Bill continued the pattern until the shape had 3279 branches.

How many nodes did the shape have?

Show Answers Only

`1093\ text(nodes)`

Show Worked Solution

`text(Pattern shows that:)`

`text(Number of branches)/text(Number of nodes)\ = 3/1 = 12/4 =3`

 

`=>\ text(If there are 3279 branches,)`

`:.\ text(Number of nodes)` `= 3279 -: 3`
  `= 1093\ text(nodes)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 9, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-C4-CA10

Tim produced a pattern with large squares and small triangles.
 

 
If Tim continues this pattern how many small triangles will be in the 12th shape?

`6`  `12` `26` `30`
 
 
 
 
Show Answers Only

`26`

Show Worked Solution

`text(Let)\ \ s = text(Number of large squares)`

`:.\ text(Number of triangles in the 12th shape)`

`= (s xx 2) + 2`

`= 12 xx 2 + 2`

`= 24 + 2`

`= 26`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 7, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-D4-CA10

Billy is setting up tables for a comedy night at his club.

An  X  is placed for every available seat at a table, as shown below.
 

 
Which of these rules can be used to work out how many people can sit on any row of tables?

 
`text(number of tables) xx 6`
 
`text(number of tables) ÷ 2 - 2`
 
`text(number of tables) xx 4 + 2`
 
`text(number of tables) xx 4 - 2`
Show Answers Only

`text(number of tables) xx 4 + 2`

Show Worked Solution

`text(Consider Option 3:)`

`text(1st table:)\ \ 1 xx 4 +2 = 6\ text(people)`

`text(2nd table:)\ \ 2 xx 4 +2 = 10\ text(people)`

`text(3rd table:)\ \ 3 xx 4 +2 = 14\ text(people)`

 

`:.\ text(number of tables) xx 4 + 2\ \ text(is the correct rule.)`

Filed Under: Harder Equations, Harder Equations, Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 7, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-C4-NC03

Leo creates a pattern of triangles using sticks as shown below.

The number of sticks in the first four figures are 1, 3, 6 and 10.
 

 

 
What is the number of sticks needed for Figure 5?

`14` `15` `17` `21`
 
 
 
 
Show Answers Only

`15`

Show Worked Solution

`text(The pattern shows that:)`

`text(Figure 5 = Figure 4 + 5 sticks)`

 

`:.\ text(The number of sticks in figure 5)`

`=10+ 5 = 15`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 6, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-E4-CA19

Choon designs a line of tiles that repeats 5 different tiles in the same order, as shown below.

Each tile costs $11.50 and Choon uses $322 worth of tiles.

Which of these is the last tile in his line of tiles?

 
 
 
 
 
Show Answers Only

Show Worked Solution

`text(Total number of tiles used)`

`=322/11.50`

`=28`

 

`:.\ text(5 rows of 5 are used and the last tile is the 3rd)`

`text(in the pattern.)`

 

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 8, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-E4-NC05

David makes the following pattern of figures using sticks.
 

 
How many sticks will Figure 6 require?

`30` `32` `34` `37`
 
 
 
 
Show Answers Only

`32`

Show Worked Solution

`text(Each figure adds 5 extra sticks,)`

`=>\ text(Figure 4 – 22 sticks)`

`=>\ text(Figure 5 – 27 sticks)`

`:.\ text(Figure 6 – 32 sticks)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 7, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-F4-CA28

Angela stacks up identical cups.
 

 
A stack of 3 cups is 21 cm high.

A stack of 6 cups is 30 cm high.

What height will a stack of 10 similar cups be?

`70\ text(cm)` `54\ text(cm)` `50\ text(cm)` `42\ text(cm)`
 
 
 
 
Show Answers Only

`42\ text(cm)`

Show Worked Solution

`text(Height difference between 3 cups and 6 cups)`

`=30-21`

`=9\ text(cm)`

`=>\ text(Each extra cup adds 3 cm.)`

 

`text(S)text(ince 6 cups are 30 cm,)`

`:.\ text{Height of 10 cups (an extra 4)}`

`= 30 + (4 xx 3)`

`= 42\ text(cm)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 10, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-F4-NC25

Anthony is tiling his bathroom.
 

 
He follows this pattern to make a line of tiles that is 90 cm long.

How many tiles are in this line?

Show Answers Only

`50\ text(tiles)`

Show Worked Solution

`text(S)text(ince 20 tiles form a line 36 cm long,)`

`=>\ text(1 group of 5 tiles is 9 cm long.)`

 

`:.\ text(Tiles in a 90 cm line)`

`= 90/9 xx 5`

`= 50\ text(tiles)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 10, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-F4-NC21

Peter uses matchsticks to make a pattern of shapes, as shown in the table below.
 

 

 
The equation used to show the relationship between  `S`  and  `N`  is

`S = N + 5` `S = 5N` `S = 5N + 1` `S = 7N - 1`
 
 
 
 
Show Answers Only

`S = 5N + 1`

Show Worked Solution

`text(Shape 1:)\ \ S=5 xx 1 +1 =6`

`text(Shape 2:)\ \ S=5 xx 2 +1 =11`

`text(Shape 3:)\ \ S=5 xx 3 +1 =16`

`:. S = 5N + 1`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 9, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Algebra, NAP-H4-NC31 SA

Renee created a shape using equilateral triangles and squares.

She begins by using a triangle with side length 1 cm.

She then adds a square, then another triangle, then a square etc... until she has 5 triangles and 5 squares.
 
 

 

What will the perimeter of the whole shape be?

   cm
Show Answers Only

`17`

Show Worked Solution

`text(Perimeter of 1 triangle = 3 cm.)`

`text(Add a square,)`

`text(Perimeter increases by 2 cm = 5 cm)`

`text(Add a triangle,)`

`text(Perimeter increases by 1 cm = 6 cm)`
 

`:.\ text(Perimeter of 5 triangles and 5 squares)`

`=3+2+1+2+1+2+1+2+1+2`

`=17\ text(cm)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry, Perimeter, Area and Volume, Perimeter, Area and Volume Tagged With: Band 10, smc-3180-20-Patterns and images, smc-3183-10-Perimeter, smc-665-20-Patterns and images, smc-669-10-Perimeter

Algebra, NAP-H4-CA24 SA

Mike uses match sticks to make a pattern of houses.
 

 
When a shape consists of 7 houses, how many sticks will the shape have?

Show Answers Only

`36`

Show Worked Solution

`text(1st house – 6 sticks)`

`text(Add 5 sticks for each extra houses)`

`text(5 houses – 26)`

`text(6 houses – 31)`

`text(7 houses – 36)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 10, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

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