Practicing the **Bridges in Mathematics Grade 4 Home Connections Answer Key** **Unit 2 Module 1 **will help students analyze their level of preparation.

## Bridges in Mathematics Grade 4 Home Connections Answer Key Unit 2 Module 1

**Bridges in Mathematics Grade 4 Home Connections Unit 2 Module 1 Session 2 Answer Key**

**Measuring in Centimeters**

Note to Families

This Home Connection asks students to measure common items at home in centimeters. If you have a ruler or tape measure at home marked in centimeters, have your child use it. If not, you can cut out the strips below and tape or glue them together to create a measuring tape.

**Measuring in Centimeters**

Question 1.

Find a ruler or tape measure that is marked in centimeters. You can also cut out the strips below and tape or glue them together to make your own measuring tape.

Answer:

The tape or glue is

Question 2.

By yourself or with a family member or two, measure the items listed on the worksheet and record your results.

Answer:

Length of the book is 6 cm.

Breath of the book is 4 cm.

The book is in the shape of rectangle.

The formula for the rectangle is l x b = 6 x 4 = 24 cm.

Therefore the measurement of the book is 24 cm.

Please measure the following objects in centimeters and record the results.

Question 1.

Object To Be Measured

width of your bed

Measurement in Centimeters

Answer:

The width of the bed is 102 cm.

Question 2.

Object To Be Measured

width of a door

Measurement in Centimeters

Answer:

The width of the door is 104 cm.

Question 3.

Object To Be Measured

height from the floor to the seat of your favorite chair

Measurement in Centimeters

Answer:

The height from the floor to the seat of your favorite chair is 46 cm.

Question 4.

Object To Be Measured

length of a telephone or cell phone

Measurement in Centimeters

Answer:

The length of the telephone is 15 cm.

Question 5.

Object To Be Measured

dimensions of your favorite book (length and width)

Measurement in Centimeters

Answer:

dimensions of your favorite book in length and width is 14cm x 21 cm.

Question 6.

Object To Be Measured

width of your refrigerator

Measurement in Centimeters

Answer:

width of your refrigerator is 102 cm.

Question 7.

Object To Be Measured

dimensions of a towel

(length and width)

Measurement in Centimeters

Answer:

The dimensions of a towel (length and width) is 75 cm.

Question 8.

Object To Be Measured

length of your toothbrush

Measurement in Centimeters

Answer:

The length of the toothbrush is 19 cm.

Locate objects at home that are about 6 cm and 80 cm long or tall. Record the name of the object below.

Question 1.

Approximate Length

about 6 cm long or tall

Object You Found

Answer:

Approximate Length about 6 cm long or tall is locker key.

Question 2.

Approximate Length

80 cm long or tall

Object You Found

Answer:

Approximate Length 80 cm long or tall is table length.

Question 3.

Jasmine is making cookies for the fourth grade class. The recipe calls for 8 ounces of chocolate chips. She needs to triple the recipe to have enough for everyone, and she is going to add 2 more ounces of chocolate chips to the tripled batch to make the cookies extra delicious. How many ounces of chocolate chips does she need?

a. Use numbers, labeled sketches, or words to solve the problem. Show your work.

Answer:

Given,

Jasmine is making cookies for the fourth grade class. The recipe calls for 8 ounces of chocolate chips.

8 Ã— 3 = 24

She needs to triple the recipe to have enough for everyone, and she is going to add 2 more ounces of chocolate chips to the tripled batch to make the cookies extra delicious.

24 + 2 = 26

b. Fill in the bubble beside the equation that best represents this problem. (The letter c stands for ounces of chocolate chips.)

8 + 3 + 2 = c

(8 Ã— 3) + 2 = c

(8 Ã— 3) – 2 = c

Answer:

(8 Ã— 3) + 2 = c

c = 24 + 2

c = 26

Option B is the correct answer.

Question 4.

Jasmine can fit 12 cookies on a cookie sheet. She needs 6 times that many cookies for the whole fourth grade. Jasmine also wants to have 2 cookies for each of the 4 teachers. How many cookies does Jasmine need to make? Show your work.

Answer:

Given,

Jasmine can fit 12 cookies on a cookie sheet. She needs 6 times that many cookies for the whole fourth grade.

12 Ã— 6 = 72

Jasmine also wants to have 2 cookies for each of the 4 teachers.

4 Ã— 2 = 8

72 + 8 = 80

Question 5.

**CHALLENGE** When 2 pieces of rope are placed end-to-end, they measure 40 meters in length. When the 2 pieces are laid side-by-side, one is 10 meters longer than the other. How long is each piece of rope? Show your work.

Answer:

Given,

When 2 pieces of rope are placed end-to-end, they measure 40 meters in length.

a + b = 40 —(1)

When the 2 pieces are laid side-by-side, one is 10 meters longer than the other.

a = b + 10 —(2)

a + b = 40

(b + 10) + b = 40

b + b + 10 = 40

2b + 10 = 40

2b = 40 – 10

2b = 30

b = 30/2

b = 15

a = b + 10

a = 15 + 10

a = 25

Thus the length of each rope will be 15 and 25 meters.

**Bridges in Mathematics Grade 4 Home Connections Unit 2 Module 1 Session 4 Answer Key**

Question 1.

For each rectangle below, label the dimensions, find the area, and write an equation to describe the array.

ex

Labeled Array

Area

60 sq. units

Multiplication Equation

6 units Ã— 10 units = 60 sq. units

a.

Labeled Array

Area

Multiplication Equation

Answer:

l = 10

w = 8

Area = 8 Ã— 10

A = 80 sq. units

Multiplication Equation: 8 Ã— 10

b.

Labeled Array

Area

Multiplication Equation

Answer:

l = 10

w = 7

Area = 10 Ã— 7

A = 70 sq. units

Multiplication Equation: 10 Ã— 7 = 70

c.

Labeled Array

Area

Multiplication Equation

Answer:

l = 13

w = 10

Area = 13 Ã— 10 = 130 sq. units

Multiplication Equation: 13 Ã— 10 = 130

Question 2.

Write a multiplication equation or story problem in each empty box to complete the table.

Answer:

Question 3.

**CHALLENGE** Dana has only nickels in her hand, and Ajah has exactly the same number of dimes and no other coins. Together they have a total of 90âŠ„. How many coins is each person holding? Show your work below.

Answer:

Given,

Dana has only nickels in her hand, and Ajah has exactly the same number of dimes and no other coins. Together they have a total of 90âŠ„.

A nickel is worth $0.05

Dana has 0.05x

A dime is worth $0.1

Ajah has 0.1c

0.05x + 0.1x = 0.9

0.15x = 0.9

x = 0.9/0.15

x = 6

Each person is holding 6 coins.