Practicing the **Bridges in Mathematics Grade 4 Home Connections Answer Key** **Unit 4 Module 3 **will help students analyze their level of preparation.

## Bridges in Mathematics Grade 4 Home Connections Answer Key Unit 4 Module 3

**Bridges in Mathematics Grade 4 Home Connections Unit 4 Module 3 Session 2 Answer Key**

**Which Measurement Is Best?**

Question 1.

What is the best estimate of the height of the ceiling?

10 inches

10 feet

10 meters

10 centimeters

Answer:

The best estimate of the height of the ceiling is 10 feet.

10 feet

Question 2.

The length of a mouse is best measured in what units?

feet

ounces

centimeters

yards

Answer: The length of a mouse is best measured in centimeters.

centimeters

Question 3.

What is the best estimate of the distance across your classroom?

30 meters

30 yards

30 feet

30 kilometers

Answer:

The best estimate of the distance across your classroom is 30 meters.

30 meters

Question 4.

Which of these units would best measure the length of a ladybug?

millimeters

inches

grams

feet

Answer:

The best measure of the length of a ladybug is millimeters.

millimeters

Question 5.

Which of these units would best measure the length of a pair of scissors?

grams

ounces

feet

centimeters

Answer:

The best measure of the length of a pair of scissors is centimeters.

centimeters

Question 6.

The distance across the state in which you live is best measured in what units?

yards

gallons

ounces

miles

Answer:

The distance across the state in which you live is best measured is miles.

miles

Question 7.

Kim was using a give and take strategy. Fill in the blanks to make the equation true.

999 + 587 = 1,000 + ______________ = ______________

Answer:

999 + 587 = 1,000 + 586 = 1586

Question 8.

Kevin was using the constant difference strategy. Fill in the blanks to make the equation true.

1,256 – 799 = _____________ – 800 = ________________

Answer:

1,256 – 799 = 1257 – 800 = 457

Question 9.

**CHALLENGE** Owen had three different kinds of stickers that he wanted to put on paper. He put a bird sticker on every 30th paper, a sports sticker on every 50th paper and a robot sticker on every 60th paper. Will any of the first 600 pages have all three stickers? If so, which pages?

Answer:

Given,

Owen had three different kinds of stickers that he wanted to put on paper.

He put a bird sticker on every 30th paper, a sports sticker on every 50th paper and a robot sticker on every 60th paper.

Multiples of 30 = 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, 450, 480, 510, 540, 570, 600.

Multiples of 50 = 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600

Multiples of 60 = 60, 120, 180, 240, 300, 360, 420, 480, 540, 600

So, the common multiples are 300 and 600.

**Bridges in Mathematics Grade 4 Home Connections Unit 4 Module 3 Session 4 Answer Key**

**Running the Race**

**Use an open number line to model and solve problems 1 and 2.**

Question 1.

Anna started a race at 9:30 am. She ran for 3 hours and 47 minutes. What time did she finish her race?

Answer:

Given,

Anna started a race at 9:30 am. She ran for 3 hours and 47 minutes.

9 hour 30 mins

3 hour 47 mins

12 hour 77 mins

= 13 hour 17 mins

So, the race ends at 1:17 P.M.

Question 2.

Michael and Tyler both ran a half marathon. Michael finished in 1 hour 42 minutes and 13 seconds. Tyler finished in 97 minutes and 49 seconds.

a. Who was faster?

Answer:

Given,

Michael and Tyler both ran a half marathon. Michael finished in 1 hour 42 minutes and 13 seconds.

Tyler finished in 97 minutes and 49 seconds.

1 hour = 60 minutes

97 minutes = 60 + 37 = 1 hour 37 minutes

So, Typer was faster.

b. How much faster was he?

Answer:

(1 hour, 42 minutes 13 seconds) – (1 hour, 37 minutes, 49 seconds)

4 minutes, 24 seconds.

Tyler was 4 minutes and 24 seconds faster than Michael.

Question 3.

Takumi ran the first mile of his race in 450 seconds. How many minutes was his first mile?

Answer:

Given,

Takumi ran the first mile of his race in 450 seconds.

60 seconds = 1 min

450/60 = 45/6 = 15/2 = 7.5 minutes

Tamuki ran the first mile of his race in 7.5 minutes.

Question 4.

Johanna used tiles to build a rectangular array with an area of 54. List all the possible dimensions of the array.

Answer:

Given,

Johanna used tiles to build a rectangular array with an area of 54.

54 = 54 Ã— 1, this is the first probability

54 = 27 Ã— 2, this is the second probability

54 = 18 Ã— 3, this is the third probability

54 = 9 Ã— 6, this is the fourth probability

There are four probabilities that can be there.

Question 5.

What is 329,456 rounded to the

nearest ten? ______________

nearest hundred? ______________

nearest thousand? ______________

Answer:

329,456 rounded to the nearest ten is 329,460.

329,456 rounded to the nearest hundred is 329,500.

329,456 rounded to the nearest thousand is 330,000.

Question 6.

Fill in the bubble to show which number listed below is closer to 445,890:

450,000

440,000

Answer:

450,000 is closer to 445,890.

450,000

Question 7.

If you wanted to round 373,417 to the nearest ten thousand, which number below would you choose?

380,000

370,000

Answer:

373,417 to the nearest ten thousand is 370,000

370,000

Question 8.

**CHALLENGE** Linda plans to sign up for three Field Day events. She wants to run a total of more than a kilometer but less than 1.5 kilometers. Which three events should she sign up for? Her choices are:

Answer:

To find the best combination of events for Linda to sign up for to run a total of more than a kilometer but less than 1.5 kilometers, we must first determine the total distances of the individual events.

Depending on the events offered, Linda can choose three events that add up to more than a kilometer but less than 1.5 kilometers.

If Linda has the option of running the 100m, 200m, and 800m, she can satisfy her requirement of running more than a kilometer but less than 1.5 kilometers by choosing the 100m, 200m, and 800m.

Add up to 1100m, which is over a kilometer but below 1.5 kilometers.

Another option for Linda is to run the 100m, 400m, and 600m, which would add up to 1100m, once again satisfying her requirement.