Refer to our Texas Go Math Grade 4 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 4 Unit 3 Answer Key Algebraic Reasoning.

## Texas Go Math Grade 4 Unit 3 Answer Key Algebraic Reasoning

**Show What You Know**

**Missing Factors Find the missing factor.**

Question 1.

___________ × 6 = 24

Answer:

4× 6 = 24

Explanation:

4 rows and 6 columns

Each row consists of 6 tiles, total 4 x 6 = 24 tiles

Question 2.

3 × ___________ = 27

Answer:

3 × 9 = 27

Explanation:

3 rows and 9 columns

Each row consists of 9 tiles, total 3 x 9 = 27 tiles

**Find Perimeter Add to find the perimeter.**

Question 3.

Perimeter = ____________

Answer:

12 units

Explanation:

Perimeter = 2(length + width)

= 2 (2 + 4 )

= 2(6)

= 12

Question 4.

Perimeter = ____________

Answer:

8 units

Explanation:

Perimeter = 2(length + width)

= 2 (2 + 2 )

= 2(4)

= 8

Question 5.

Perimeter = ____________

Answer:

16 units

Explanation:

Perimeter = 2(length + width)

= 2 (4 + 4 )

= 2(8)

= 16

Question 6.

Perimeter = ____________

Answer:

16 units

Explanation:

Perimeter = 2(length + width)

= 2 (2 + 6 )

= 2(8)

= 16

**Find Area of Rectangles Find the area.**

Question 7.

Area = ____________ square units

Answer:

8 square units

Explanation:

Area = (Length x Width) square units

= 2 x 4

= 8 square units

Question 8.

Area = ____________ square units

Answer:

12 square units

Explanation:

Area = (Length x Width) square units

= 2 x 6

= 12 square units

**Vocabulary Builder**

Review Words

- unit

Measurement is to find a number that shows the amount of something. A measurement**unit**is a standard quantity used to express a physical quantity.

Preview Words

- area
- formula
- length
- pattern
- perimeter
- square unit
- term
- width

**Visualize It**

**Place the checked words in the appropriate columns of the table. Words may be used more than once.**

Answer:

Explanation:

The total space or region enclosed inside a rectangle is known as area.

The perimeter of the rectangle is the sum of all its four sides.

**Understand Vocabulary**

**Write the word or term that answers the riddle.**

Question 1.

I am the number of unit squares needed to cover a flat surface.

Answer:

Area

Explanation:

The total space or region enclosed inside a rectangle is known as area.

Question 2.

I am the distance around a figure.

Answer:

Perimeter

Explanation:

The perimeter of the rectangle is the sum of all its four sides.

Question 3.

I am a unit of area that measures 1 unit by 1 unit.

Answer:

square unit

Explanation:

A square unit can be defined as the metric unit used to measure area.

Here, for instance, the area of this rectangle is measured in square units using unit squares.

Question 4.

I am a set of symbols that expresses a mathematical rule.

Answer:

pattern

Explanation:

Pattern is a series or sequence that repeats.

Question 5.

I am an ordered set of numbers or objects.

Answer:

Term

Explanation:

Terms are the values on which the mathematical operations take place in an expression.

A term can be a constant or a variable or both in an expression.

**Reading & Writing Math**

Reading In reading, thinking about what you already know helps you to understand a new topic. You already know a lot about geometry and measurement. You can use what you know to move ahead.

Before beginning a lesson on perimeter and area, Lili lists five things she already knows.

Topic: Perimeter and Area

What do I already know?

- Perimeter is the distance around a shape.
- You can use an inch ruler to measure perimeter.
- You can use a centimeter ruler to measure perimeter.
- Area is the number of square units needed to cover a flat surface.
- You use grid paper to find area.

Writing Think about what you know about perimeter and area. Use grid paper. Draw a rectangle. Find its perimeter. Find its area.

Think

I remember finding the perimeter of a rectangle. I added the lengths of its sides.

Answer:

50 square units.

Explanation:

perimeter of a rectangle is the added the lengths of its sides of a rectangle

perimeter = AB + BC + CD + DA

= 10 + 5 + 10 + 5 = 30 units

area of a rectangle is the multiplication of sides of a rectangle.

area = AB X BC

= length x width

= 10 x 5 square units

**Get Ready GAME**

Find the Area

Object of the Game Practice finding the area of different sized rectangles.

Materials

- Inch Rulers
- Rectangle Cards (2 sets)

Set Up

- Each player gets an inch ruler.
- Players shuffle the Rectangle Cards and place them face down in a stack.

**Number of Players 2**

**How to Play**

Question 1.

Players take turns drawing a card from the stack until each player has four cards.

Answer:

Rectangle

Explanation:

A rectangle is a four-sided flat shape where every angle is a right angle (90°).

Question 2.

Players use an inch ruler to measure the length and width of each rectangle to the nearest inch.

Answer:

Area

Explanation:

The size of a surface is called Area.

The amount of space inside the boundary of a flat (2-dimensional) object such as a triangle or circle,

or surface of a solid (3-dimensional) objects are called Area.

Question 3.

Players find the area for each rectangle and add the areas together.

Answer:

Square units

Explanation:

A square unit can be defined as the metric unit used to measure area.

Here, for instance, the area of this rectangle is measured in square units using unit square.

Question 4.

The player with the largest sum scores a point.

Answer:

Patterns

Explanation:

Pattern is a series or sequence that repeats.

Question 5.

Return all the cards to the stack and shuffle. Repeat steps 1-4. The first player to score o total of 3 points is the winner.

Answer:

Forming of rectangles

Explanation:

A rectangle is a four-sided flat shape where every angle is a right angle (90°).