The solutions to Bridges in Mathematics Grade 3 Home Connections Answer Key Unit 7 Module 2 can help students to clear their doubts quickly.
Bridges in Mathematics Grade 3 Home Connections Answer Key Unit 7 Module 2
Bridges in Mathematics Grade 3 Home Connections Unit 7 Module 2 Session 2 Answer Key
Multiplication, Division & Perimeter Practice
Question 1.
Complete the multiplication facts.
Answer:
Question 2.
Complete the division facts
40 ÷ 5 = ______________
12 ÷ 2 = ______________
90 ÷ 10 = ______________
8 ÷ 1 = _______________
25 ÷ 5 = _______________
14 ÷ 2 = _______________
Answer:
40 ÷ 5 = 8
Divide 40 by 5 we get 8
12 ÷ 2 = 6
Divide 12 by 2 we get 6
90 ÷ 10 = 9
Divide 90 by 10 we get 9
8 ÷ 1 = 8
Divide 8 by 1 we get 8
25 ÷ 5 = 5
Divide 25 by 5 we get 5
14 ÷ 2 = 7
Divide 14 by 2 we get 7
Question 3.
Find the perimeter of each rectangle.
Perimeter = _______________
Perimeter = _______________
Answer:
Perimeter of the rectangle = 2(l + w)
P = 2(96 + 124)
= 440 ft
Perimeter of the rectangle = 2(l + w)
P = 2(28 + 117)
= 290 ft
Question 4.
What is the difference between the perimeters of the rectangles above?
Answer:
P = 440 ft
P2 = 290
Perimeter = 440 – 290 = 150 ft
Show all your work when you solve these problems. Use numbers, sketches, or words.
Question 5.
Dale and Lori are buying a watch for their father for his birthday. The watch they want to get him usually costs $129 but it is on sale for $60 less.
a. How much will the watch cost?
Answer:
Given,
Dale and Lori are buying a watch for their father for his birthday.
The watch they want to get him usually costs $129 but it is on sale for $60 less.
129 – 60 = $69
b. If they each pay half, how much will Dale pay?
Answer:
The watch costs $69.
If each pay half then Dale pay 69/2 = $34.50
c. If they let their brother, Mike, go in on the gift, how much will each pay?
Answer:
The watch costs $69.
69/3 = $23.
Question 6.
CHALLENGE Mrs. Larsen wanted her class to work in groups of 4. After she divided them into groups, there were 6 groups of 4 and 1 group of 3.
a. How many students were in the class? Write and solve an equation to represent this problem.
Answer:
Given,
Mrs. Larsen wanted her class to work in groups of 4.
After she divided them into groups, there were 6 groups of 4 and 1 group of 3.
(6 × 4) + 3 = 27 students
b. If the teacher wanted all the groups to be exactly the same size, how many students should be in each group? How many small groups would there be? Show all your work.
Answer:
3 groups of 9.
3 × 9 = 27
Bridges in Mathematics Grade 3 Home Connections Unit 7 Module 1 Session 4 Answer Key
More Multiplication Review
Question 1.
Complete the multiplication facts.
Answer:
Question 2.
Fill in the missing number in each fact. Then write a related division equation.
4 × 5 = 20 20 ÷ 5 = 4
__________ × 3 = 21 ___________ ÷ ___________ = ___________
5 × __________ = 25 ___________ ÷ ___________ = ___________
__________ × 7 = 14 ___________ ÷ ___________ = ___________
Answer:
7 × 3 = 21 21 ÷ 3 = 7
5 × 5 = 25 25 ÷ 5 = 5
2 × 7 = 14 14 ÷ 7 = 2
Question 3.
CHALLENGE Solve the following:
Answer:
Question 4.
Sarah says you only need to measure one side of a square to figure out its perimeter. Do you agree with Sarah? Why or why not? Use labeled sketches, numbers, or words to explain your answer.
Answer:
Since all 4 sides of a square are the same length, you can calculate the perimeter with only one side’s length known.
Use labeled sketches, numbers, or words to explain your answers when you solve these problems.
Question 5.
Andrea got some free carpet squares at a carpet store. She got enough blue squares to cover 2 feet by 8 feet and enough red squares to cover 5 feet by 8 feet. How many total square feet can be covered if Andrea puts these carpet squares together?
Answer:
Given,
Andrea got some free carpet squares at a carpet store. She got enough blue squares to cover 2 feet by 8 feet and enough red squares to cover 5 feet by 8 feet.
2 × 8 = 16
5 × 8 = 40
16 + 40 = 56 feet
Question 6.
Mark the two equations below that could be used to help solve Problem 5.
(2 + 8) × (5 + 8) = a
(2 × 8) + (5 × 8) = a
(2 + 5) + 8 = a
(2 + 5) × 8 = a
Answer:
(2 × 8) + (5 × 8) = a
Question 7.
CHALLENGE The movie theater in our town has 2 aisles and 3 blocks of seats. Two blocks of seats each have 24 rows of 7 seats. The middle block of seats has 24 rows of 14 seats. How many seats are in the theater in all? Show all your work.
Answer:
The movie theater in our town has 2 aisles and 3 blocks of seats. Two blocks of seats each have 24 rows of 7 seats.
24 × 7 = 168
2 × 168 = 336
The middle block of seats has 24 rows of 14 seats.
24 × 14 = 336
336 + 336 = 672 seats.