Bridges in Mathematics Grade 2 Home Connections Unit 7 Module 3 Answer Key

Practicing the Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 7 Module 3 will help students analyze their knowledge of concepts.

Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 7 Module 3

Bridges in Mathematics Grade 2 Home Connections Unit 7 Module 3 Session 1 Answer Key

Twice as Big?

Note To Families
This Home Connection activity will give your child an opportunity to measure and compare length and circumference in centimeters. If you don’t have a cloth centimeter tape measure at home, you’ll need to cut and tape the paper strips on the next page together to make one. Although this won’t be the sturdiest measuring device in the world, it will probably hold together long enough to complete this activity.

Many kids your age think that they’re probably about half as big as the adults in their family. Do you think this is true for you? Let’s do some measuring and find out. First, you’ll need to find a cloth centimeter tape measure around your house, or tape the paper strips on page 3 together to make one. Now you’re all set! Use your tape measure to help answer the following questions:

Question 1.
How long is your hand and forearm, from the tip of your middle finger to your elbow?
____________ cm
Answer:
Distance between hand and forearm is 20 centimeters and Distance from tip of your middle finger to your elbow is 30 centimeters.

Explanation:
Distance between hand and forearm = 20 centimeters.
Distance from tip of your middle finger to your elbow = 30 centimeters.

Question 2.
How long is the adult’s hand and forearm?
____________ cm
Answer:
35 centimeters is the adult’s hand and forearm.
_____35_______ cm.

Explanation:
Distance of an adult’s hand and forearm = ??
=> Distance of an adult’s hand and forearm = 35 centimeters.

Question 3.
How much longer is the adult’s hand and forearm than yours?
_____________ cm
Answer:
15 centimeters longer is the adult’s hand and forearm than mine.

Explanation:
Distance between hand and forearm = 20 centimeters.
Distance of an adult’s hand and forearm = 35 centimeters.
Difference:
Distance of an adult’s hand and forearm – Distance between hand and forearm
= 35 – 20
= 15 centimeters.

Question 4.
Circle the words that make this a true sentence:
The adult’s hand and forearm is ____________ the length of mine.
exactly twice
more than twice
less than twice
Answer:
The adult’s hand and forearm is less than twice the length of mine.

Explanation:
15 centimeters longer is the adult’s hand and forearm than mine.
=> The adult’s hand and forearm is less than twice the length of mine.

Question 5.
How big around is your wrist?
___________ cm
Answer:
18 centimeters big around is my wrist.
____18_______ cm.

Explanation:
Number of centimeters big around is my wrist = ??
=> Number of centimeters big around is my wrist =  18.

Question 6.
How big around is the adult’s wrist?
____________ cm
Answer:
36 centimeters big around is adult’s wrist.

Explanation:
Number of centimeters big around is adult’s wrist = ??
=> Number of centimeters big around is adult’s wrist =  36.

Question 7.
How much bigger around is the adult’s wrist than yours?
____________ cm
Answer:
18 centimeters bigger around is the adult’s wrist than mine.
_____18_______ cm.

Explanation:
18 centimeters big around is my wrist.
36 centimeters big around is adult’s wrist.
Difference:
Number of centimeters big around is adult’s wrist – Number of centimeters big around is my wrist
= 36 – 18
= 18.

Question 8.
Circle the words that make this a true sentence:
The adult’s wrist is ____________ big around as mine.
exactly twice
more than twice
less than twice
Answer:
The adult’s wrist is ___exactly twice_________ big around as mine.

Explanation:
18 centimeters big around is my wrist.
36 centimeters big around is adult’s wrist.
18 centimeters bigger around is the adult’s wrist than mine.
=> The adult’s wrist is double big around as mine.

Question 9.
How long is your foot?
____________ cm
Answer:
10 centimeters long is my foot.
____10________ cm.

Explanation:
Number of centimeters long is my foot = ??
=> Number of centimeters long is my foot = 10.

Question 10.
How long is the adult’s foot?
____________ cm
Answer:
15 centimeters long is adult’s foot.
___15_________ cm.

Explanation:
Number of centimeters long is adult’s foot = ??
=> Number of centimeters long is adult’s foot = 15.

Question 11.
How much longer is the adult’s foot than yours?
____________ cm
Answer:
5 centimeters longer is the adult’s foot than mine.
______5______ cm.

Explanation:
15 centimeters long is adult’s foot.
10 centimeters long is my foot.
Difference:
Number of centimeters long is adult’s foot – Number of centimeters long is my foot
= 15 – 10
= 5.

Question 12.
Circle the words that make this a true sentence:
The adult’s foot is ______________ as big as mine.
exactly twice
more than twice
less than twice
Answer:
The adult’s foot is ___less than twice___________ as big as mine.

Explanation:
15 centimeters long is adult’s foot.
10 centimeters long is my foot.
Difference:
Number of centimeters long is adult’s foot – Number of centimeters long is my foot
= 15 – 10
= 5.

Question 13.
Now, see if you can find one measurement on the adult that is very close to twice as big as the same measurement on you.
The adult’s ___________ is about twice the length/circumference as mine.
Answer:
The adult’s _height___ is about twice the length/circumference as mine.

Explanation:
Height of my parent = 160 cm.
Height of mine = 80 cm.
Difference:
Height of my parent – Height of mine
= 160 – 80
= 80 cm.
=> The adult’s height is about twice the length/circumference as mine.

Question 14.
Would you say, overall, that the adult is ____________ as big as you?
more than twice
less than twice
about twice
Answer:
Over all, that the adult is __more than twice__________ as big as you

Explanation:
The adult’s wrist is ___exactly twice_________ big around as mine.
The adult’s foot is ___less than twice___________ as big as mine.
The adult’s _height___ is about twice the length/circumference as mine.

Bridges in Mathematics Grade 2 Home Connections Unit 7 Module 3 Session 3 Answer Key

Numbers & Buttons

Question 1.
Read each number. Then write it in expanded form.

ex: four hundred fifteen
415 = 400 + 10 + 5

a. two hundred eighty-six
Answer:
Expanded form of two hundred eighty-six = 200 + 80 + 6.

Explanation:
Given: two hundred eighty-six
two hundred eighty-six = 200 + 86 = 286.
286 = 200 + 80 + 6.

b. seven hundred fifty-three
Answer:
Expanded form of seven hundred fifty-three = 600 + 50 + 3.

Explanation:
Given: seven hundred fifty-three
seven hundred fifty-three = 600 + 53 = 653.
653 = 600 + 50 + 3.

c. six hundred twenty-one
Answer:
Expanded form of six hundred twenty-one = 600 + 20 + 1.

Explanation:
Given: six hundred twenty-one
six hundred twenty-one = 600 + 21 = 621.
621 = 600 + 20 + 1.

d. three hundred forty-seven
Answer:
Expanded form of three hundred forty-seven = 300 + 40 + 7.

Explanation:
Given: three hundred forty-seven
three hundred forty-seven = 300 + 47 = 347.
347 = 300 + 40 + 7.

e. nine hundred seventeen
Answer:
Expanded form of nine hundred seventeen = 900 + 10 + 7.

Explanation:
Given: nine hundred seventeen
nine hundred seventeen = 900 + 17 = 917.
917 = 900 + 10 + 7.

f. one hundred sixty
Answer:
Expanded form of one hundred sixty = 100 + 60 + 0.

Explanation:
Given: one hundred sixty
one hundred sixty = 100 + 60 = 160.
160 = 100 + 60 + 0.

g. eight hundred four
Answer:
Expanded form of eight hundred four = 800 + 00 + 4.

Explanation:
Given: eight hundred four
eight hundred four = 800 + 4 = 804.
804 = 800 + 00 + 4.

Question 2.
Find each sum.
500 + 20 + 8 = _____________
200 + 20 + 2 = _____________
100 + 70 + 1 = _____________
700 + 10 + 9 = _____________
800 + 40 + 7 = _____________
500 + 3 = ______________

Answer:
Addition:
500 + 20 + 8 = ____528_________.
200 + 20 + 2 = _____222________.
100 + 70 + 1 = _____171________.
700 + 10 + 9 = _____719________.
800 + 40 + 7 = ______847_______.
500 + 3 = ______503________.

Explanation:
Sum of:
500 + 20 + 8 = 528.
200 + 20 + 2 = 222.
100 + 70 + 1 = 171.
700 + 10 + 9 = 719.
800 + 40 + 7 = 847.
500 + 3 = 503.
Equations:
200 + 90 + 1 = 291.
300 + 10 + 9 = 319.
200 + 20 + 6 = 226.
400 + 50 + 2 = 452.
900 + 90 + 9 = 999.
300 + 40 + 1 = 341.
400 + 10 + 8 = 418.

Question 3.
Circle the number that has the same value as the expanded form.

a. 300 + 6
36
336
306
316
Answer:
300 + 6 = 306.

Explanation:
Given:
300 + 6 = ??
Expanded form:
=> 300 + 6 = 306.

b. 200 + 10 + 7
207
217
271
721
Answer:
200 + 10 + 7 = 217.

Explanation:
Given:
200 + 10 + 7 = ??
Expanded form:
200 + 10 + 7 = 217.

Dylan’s grandma has a box of buttons. One day Dylan sorted the buttons into different groups and counted how many in each group. He made a chart to show his work.

Question 4.
Help Dylan make a bar graph to show his work. Give the graph a title and color in the columns to show how many buttons of each color he found.


Answer:

Explanation:
Title: Number of buttons.

Number of red buttons = 14.
Number of gold buttons = 25.
Number of white buttons = 26.
Number of blue buttons = 10.
Number of purple buttons = 5.
Number of black buttons = 22.

Question 5.
How many buttons were in the box in all? Show your work.
There were ____________ buttons in the box in all.
Answer:
Total number of buttons were in all in the box = 102.
There were ___102_________ buttons in the box in all.

Explanation:
Number of red buttons = 14.
Number of gold buttons = 25.
Number of white buttons = 26.
Number of blue buttons = 10.
Number of purple buttons = 5.
Number of black buttons = 22.
Total number of buttons were in all in the box = Number of red buttons + Number of gold buttons + Number of white buttons + Number of blue buttons + Number of purple buttons + Number of black buttons
= 14 + 25 + 26 + 10 + 5 + 22
= 39 + 26 + 10 + 5 + 22
= 65 + 10 + 5 + 22
= 75 + 5 + 22
= 80 + 22
= 102.

Bridges in Mathematics Grade 2 Home Connections Unit 7 Module 3 Session 5 Answer Key

Fractions & Money

Question 1.
What part of each rectangle is colored? Circle the correct fraction.
a.

Answer:

Explanation:
Given:
Number of rectangle = 1.
Number of parts in rectangle = 2.
Portion shaded = Number of rectangle ÷ Number of parts in rectangle
= 1 ÷ 2 or Half or \(\frac{1}{2}\).

b.

Answer:

Explanation:
Given:
Number of rectangle = 1.
Number of parts in rectangle = 4.
Portion shaded = Number of rectangle ÷ Number of parts in rectangle
= 1 ÷ 4 or \(\frac{1}{4}\).

c.

Answer:

Explanation:
Given:
Number of rectangle = 1.
Number of parts in rectangle = 3.
Portion shaded = Number of rectangle ÷ Number of parts in rectangle
= 1 ÷ 3 or \(\frac{1}{3}\).

d.

Answer:

Explanation:
Given:
Number of parts shaded = 3.
Number of parts in rectangle = 4.
Portion shaded = Number of parts shaded ÷ Number of parts in rectangle
= 3 ÷ 4 or \(\frac{3}{4}\).

Question 2.
Read each fraction and color in that part of the shape.
a.

two-fourths \(\frac{2}{4}\)
Answer:
two-fourths \(\frac{2}{4}\).

Explanation:
Given: two-fourths \(\frac{2}{4}\)
Number of shaded parts = 2.
Total number of parts = 4.
Shaded part in circle = Number of shaded parts  ÷ Total number of parts
= 2 ÷ 4 or \(\frac{2}{4}\).

b.

three-fourths \(\frac{3}{4}\)
Answer:
three-fourths \(\frac{3}{4}\).

Explanation:
Given: three-fourths \(\frac{3}{4}\)
Number of shaded parts = 3.
Total number of parts = 4.
Shaded part in circle = Number of shaded parts  ÷ Total number of parts
= 3 ÷ 4 or \(\frac{3}{4}\).

c.

one-third \(\frac{1}{3}\)
Answer:
one-third \(\frac{1}{3}\).

Explanation:
Given: one-third \(\frac{1}{3}\)
Number of shaded parts = 1.
Total number of parts = 3.
Shaded part in circle = Number of shaded parts  ÷ Total number of parts
= 1 ÷ 3 or \(\frac{1}{3}\).

d.

three-thirds \(\frac{3}{3}\)
Answer:
three-thirds \(\frac{3}{3}\).

Explanation:
Given: three-thirds \(\frac{3}{3}\)
Number of shaded parts = 3.
Total number of parts = 3.
Shaded part in circle = Number of shaded parts  ÷ Total number of parts
= 3 ÷ 3 or \(\frac{3}{3}\).

Question 3.
Breanna has a pair of shorts with 4 pockets. She has money in each pocket. Finish the chart below to see how much.

Answer:

Explanation:
Number of pair of shorts with pockets Breanna has = 4.
Conversion:
1 quarter = 25 cents.
1 Dime = 10 cents.
1 Nickle = 5 cents.
1 Penny = 1 cent.
Amount in b pocket Breanna has = Quarter 1 + Dimes 0 + Nickles 5 + Pennies 9.
= 25 cents + 0 cents + (5 × 5) cents + (9 × 1) cents
= 25 cents + 25 cents + 9 cents
= 50 cents + 9 cents
= 59 cents.
Amount in c pocket Breanna has = Quarter 3 + Dimes 0 + Nickles 1 + Pennies 3.
= (25 × 3) cents + 0 cents + (1 × 5) cents + (3 × 1) cents
= 75 cents + 0 cents + 25 cents + 3 cents
= 75 cents + 25 cents + 3 cents
= 100 cents + 3 cents
= 103 cents.
Amount in d pocket Breanna has = Quarter 0 + Dimes 4 + Nickles 3 + Pennies 1.
= 0 cents + (4 × 10)  cents + (3 × 5) cents + (1 × 1) cents
= 0 cents + 40 cents + 15 cents + 1 cents
= 40 cents + 15 cents + 1 cents
= 55 cents + 1 cents
= 56 cents.

Question 4.
In which pocket does Breanna have the most money?
Answer:
C pocket Breanna has the most money.

Explanation:
Amount in A pocket Breanna has = 77 cents.
Amount in B pocket Breanna has = 59 cents.
Amount in C pocket Breanna has = 103 cents.
Amount in D pocket Breanna has = 56 cents.

Question 5.
In which pocket does Breanna have the least money?
Answer:
D pocket Breanna has the least money.

Explanation:
Amount in A pocket Breanna has = 77 cents.
Amount in B pocket Breanna has = 59 cents.
Amount in C pocket Breanna has = 103 cents.
Amount in D pocket Breanna has = 56 cents.

Question 6.
Breanna wants to buy a toy for $3.00. She thinks she has enough money in her pockets. Do you agree? Explain your answer.
Answer:
Yes, she has enough money in her pockets to buy a toy in her C pocket.

Explanation:
Cost of a toy Breanna wants to buy = $3.00.
Conversion:
1 dollar = 100 cents.
=> Amount in C pocket Breanna has = 103 cents.

Question 7.
How much money does Breanna really have in her 4 pockets? Show your work.
Answer:
Total amount she has in all pockets = 295 cents.

Explanation:
Amount in A pocket Breanna has = 77 cents.
Amount in B pocket Breanna has = 59 cents.
Amount in C pocket Breanna has = 103 cents.
Amount in D pocket Breanna has = 56 cents.
Total amount she has in all pockets = Amount in A pocket Breanna has + Amount in B pocket Breanna has+ Amount in C pocket Breanna has+ Amount in D pocket Breanna has
= 77 cents + 59 cents + 103 cents + 56 cents
= 136 cents + 103 cents + 56 cents
= 239 cents + 56 cents
= 295 cents.

Question 8.
CHALLENGE Breanna bought 3 pencils at the school store. They cost 294 cents. How much money did she have left in her pockets after she paid for the pencils? Show your work.

Answer:
Amount left with her in her pockets after she paid for the pencils =1 cent.

Explanation:
Number of pencils Breanna bought at the school store = 3.
Cost of pencils = 294 cents.
Total cost of pencils Breanna bought at the school store = 294 cents.
Total amount she has in all pockets = 295 cents.
Amount left with her in her pockets after she paid for the pencils = Total amount she has in all pockets – Total cost of pencils Breanna bought at the school store
= 295 cent – 294 cent
= 1 cent.