Practice with the help of **Spectrum Math Grade 5 Answer Key Chapter 10 Pretest** regularly and improve your accuracy in solving questions.

## Spectrum Math Grade 5 Chapter 10 Pretest Answers Key

**Check What You Know**

**Graphing**

**Identify the ordered pair for each point.**

Question 1.

a.

Answer: (2,7)

A point on a grid is located by using an ordered pair. An ordered pair lists the x-axis point first and then the y-axis point. Points located on the same grid are called coordinate points, or coordinates.

(2,7) is the ordered pair mentioned in the above grid.

b.

Answer: (6,2)

A point on a grid is located by using an ordered pair. An ordered pair lists the x-axis point first and then the y-axis point. Points located on the same grid are called coordinate points, or coordinates.

(6,2) is the ordered pair mentioned in the above grid.

Question 2.

a.

Answer: (4,5)

A point on a grid is located by using an ordered pair. An ordered pair lists the x-axis point first and then the y-axis point. Points located on the same grid are called coordinate points, or coordinates.

(4,5) is the ordered pair mentioned in the above grid.

b.

Answer: (2,2)

A point on a grid is located by using an ordered pair. An ordered pair lists the x-axis point first and then the y-axis point. Points located on the same grid are called coordinate points, or coordinates.

(2,2) is the ordered pair mentioned in the above grid.

**Plot the given points on the grid. Label the points.**

Question 3.

A (3, 5)

C (6, 2)

D (4, 6)

E (7, 4)

Answer:

The position of any point of a grid can be described by an ordered pair of numbers. The two numbers are named in order: (x, y). Point A on the grid at the right is named by the ordered pair (3,5). It is located at 3 on the horizontal scale (x) and at 5 on the vertical scale (y). The number on the horizontal scale is always named first in an ordered pair. Similarly, the other order pairs are C (6, 2), D (4, 6) and E (7, 4)

Question 4.

F (2, 2)

H (6, 5)

L (6, 2)

I (1, 6)

Answer:

The position of any point of a grid can be described by an ordered pair of numbers. The two numbers are named in order: (x, y). Point F on the grid at the right is named by the ordered pair (2,2). It is located at 2 on the horizontal scale (x) and at 2 on the vertical scale (y). The number on the horizontal scale is always named first in an ordered pair. Similarly, the other order pairs are H (6, 5), L (6, 2) and I (1, 6)

**Use the grids to complete the items below.**

**Refer to the grid on the left. Name the point for each ordered pair.**

Question 5.

a. (0, 3) _____________

Answer: S

The position of any point of a grid can be described by an ordered pair of numbers. The two numbers are named in order: (x, y). Point S on the grid at the right is named by the ordered pair (0,3). It is located at 0 on the horizontal scale (x) and at 3 on the vertical scale (y). The number on the horizontal scale is always named first in an ordered pair.

b. (3, 5) _____________

Answer: W

The position of any point of a grid can be described by an ordered pair of numbers. The two numbers are named in order: (x, y). Point W on the grid at the right is named by the ordered pair (3,5). It is located at 3 on the horizontal scale (x) and at 5 on the vertical scale (y). The number on the horizontal scale is always named first in an ordered pair.

c. (6, 0) _____________

Answer: U

The position of any point of a grid can be described by an ordered pair of numbers. The two numbers are named in order: (x, y). Point U on the grid at the right is named by the ordered pair (6,0). It is located at 6 on the horizontal scale (x) and at 0 on the vertical scale (y). The number on the horizontal scale is always named first in an ordered pair.

Question 6.

a. (4, 8) _____________

Answer: N

The position of any point of a grid can be described by an ordered pair of numbers. The two numbers are named in order: (x, y). Point N on the grid at the right is named by the ordered pair (4,8). It is located at 4 on the horizontal scale (x) and at 8 on the vertical scale (y). The number on the horizontal scale is always named first in an ordered pair.

b. (8, 4) _____________

Answer: P

The position of any point of a grid can be described by an ordered pair of numbers. The two numbers are named in order: (x, y). Point P on the grid at the right is named by the ordered pair (8,4). It is located at 8 on the horizontal scale (x) and at 4 on the vertical scale (y). The number on the horizontal scale is always named first in an ordered pair.

c. (5, 5) _____________

Answer: X

The position of any point of a grid can be described by an ordered pair of numbers. The two numbers are named in order: (x, y). Point X on the grid at the right is named by the ordered pair (5,5). It is located at 5 on the horizontal scale (x) and at 5 on the vertical scale (y). The number on the horizontal scale is always named first in an ordered pair.

**Use the blank coordinate grid to solve each problem.**

Question 7.

A line runs from point (1, 7) to (3, 7). How long is the line?

Answer: 2

A line runs from point (1, 7) to (3, 7)

Count the number of points between the starting point and end of the line to find the length of the line.

The distance between (1, 7) and (3, 7) is 2.

Question 8.

A square has points (3, 1) and (7, 1). What is the perimeter of the square?

Answer: 16

A square has points (3, 1) and (7, 1).

Count the number of points between the starting point and end of the line to find the length of the line.

The distance between (3, 1) and (7, 1). is 4, which indicates side of a square.

Construct the square by indicating the other sides of the square.

Therefore, perimeter of square = 4(side) = 4(4) = 16

Question 9.

Carson walks his dog 6 blocks south to the park. Next, they jog 5 blocks east to go swimming at the pond. How many blocks did Carson and his dog travel altogether?

Answer: 11

Carson walks his dog 6 blocks south to the park. Next, they jog 5 blocks east to go swimming at the pond.

Count the number of points between the starting point and end of the line to find the distance travelled.

So, he travelled 6 blocks to south and 5 blocks to the east. Therefore, he has to walk 6 + 5, which is 11 blocks.

They travelled 11 blocks

Question 10.

Ginny pushed her baby sister’s stroller 4 blocks west and 3 blocks north to get to her grandmother’s house. Then, they walked 5 blocks east and 2 blocks south to the library. How far will they have to walk to get back home?

Answer: 1 block

Ginny pushed her baby sister’s stroller 4 blocks west and 3 blocks north to get to her grandmother’s house. Then, they walked 5 blocks east and 2 blocks south to the library.

Count the number of points between the starting point and end of the line to find the distance travelled.

Therefore, they need to travel 1 block.