The solutions to Bridges in Mathematics Grade 3 Home Connections Answer Key Unit 7 Module 3 can help students to clear their doubts quickly.
Bridges in Mathematics Grade 3 Home Connections Answer Key Unit 7 Module 3
Bridges in Mathematics Grade 3 Home Connections Unit 7 Module 3 Session 1 Answer Key
Hours to Minutes
Question 1.
There are 60 minutes in an hour. Use that information to help solve the word problems below. For each problem:
- Write an equation to match each problem and solve it.
- Write the answer on the line.
a. James stayed at the After-School club for 2 hours on Tuesday. How many minutes was James at the After-School Club?
James was at the After-School Club on Tuesday for _____________ minutes.
Answer:
Given,
James stayed at the After-School club for 2 hours on Tuesday.
There are 60 minutes in an hour.
2 × 60 = 120 minutes
James was at the After-School Club on Tuesday for 120 minutes.
b. Kara babysat her little cousin from 4:00 p.m. to 7:00 p.m. on Saturday. How many minutes did she babysit her little cousin?
Kara babysat her little cousin for ______________ minutes.
Answer:
Given,
Kara babysat her little cousin from 4:00 p.m. to 7:00 p.m. on Saturday.
There are 60 minutes in an hour.
3 × 60 = 180 minutes
Kara babysat her little cousin for 180 minutes.
c. Carlos started his chores at 9:30 a.m. He finished at 11:30 a.m.. How many minutes did he spend doing his chores?
Carlos spent _____________ minutes doing chores.
Answer:
Carlos started his chores at 9:30 a.m. He finished at 11:30 a.m.
There are 60 minutes in an hour.
2 × 60 = 120 minutes
Carlos spent 120 minutes doing chores.
Question 2.
Mrs. Ramos went out shopping at the time shown on the first clock. She came back at the time shown on the second clock.
a. How many hours was Mrs. Ramos out shopping? How did you figure it out?
Answer:
Mrs. Ramos went out shopping at the time shown on the first clock. She came back at the time shown on the second clock.
time shown on the first clock is 8:45
time shown on the second clock is 10:15
10:15 – 8:45 = 1:15
Mrs. Ramos is out shopping for 1 1/2 hours.
b. How many minutes was Mrs. Ramos out shopping? Use numbers, labeled sketches, or words to solve the problem. Show your work.
Answer:
1 hour = 60 minutes
1 1/2 hour = 60 + 30 = 90 minutes
Question 3.
Fill in the lines with the missing numbers.
3 × 40 = _____________
6 × 60 = ______________
3 × 20 = _______________
5 × 50 = ________________
60 × ____________ = 300
4 × ___________ = 120
20 × ____________ = 80
30 × ____________ = 210
50 × ____________ = 150
Answer:
3 × 40 = 120
6 × 60 = 360
3 × 20 = 60
5 × 50 = 250
60 × 5 = 300
4 × 30 = 120
20 × 4 = 80
30 × 7 = 210
50 × 3 = 150
Question 4.
CHALLENGE Are the expressions below equal? If they are, put an = sign in the space. If they aren’t, put ≠ in the space. (The symbol ≠ means not equal.)
30 × 60 ______________ 2 × 90
40 × 3 _______________ 20 × 4
60 × 4 _______________ 80 × 3
Answer:
30 × 60 ≠ 2 × 90
30 × 60 = 1800
2 × 90 = 180
1800 ≠ 180
40 × 3 ≠ 20 × 4
40 × 3 = 120
20 × 4 = 80
120 ≠ 80
60 × 4 = 80 × 3
60 × 4 = 240
80 × 3 = 240
240 = 240
Bridges in Mathematics Grade 3 Home Connections Unit 7 Module 3 Session 3 Answer Key
Telling Time to the Minute
Question 1.
Fill in the circle next to the time shown on each clock.
5:47
4:45
4:47
5:50
Answer: The time shown on the above clock is 4:47
10:30
10:28
11:28
12:30
Answer: The time shown on the above clock is 10:28
Question 2.
Write the time shown on each clock.
_________ : ______________
Answer: The time shown on the above clock is 5:32
_________ : ______________
Answer: The time shown on the above clock is 12:48
Question 3.
Circle the digital clock that shows the same time as this analog clock.
Answer:
Question 4.
CHALLENGE What fraction of a clock is represented if the hands are at 12 and 3?
Answer: 3/12 = 1/4
Show your work when you solve these problems.
Question 5.
Konnel is saving money to buy a chemistry set. He has saved $50 so far. That’s 3 of the cost of the chemistry set.
a. How much does the chemistry set cost?
Answer:
Given,
Konnel is saving money to buy a chemistry set. He has saved $50 so far. That’s 3 of the cost of the chemistry set.
50 × 3 = $150
b. How much more money does Konnel need to save to have \(\frac{1}{2}\) the cost of the chemistry set?
Answer:
Given,
Konnel is saving money to buy a chemistry set. He has saved $50 so far.
50/2 = $25
Question 6.
CHALLENGE In marathon swimming, athletes swim distances of 10 km or more. Just like in running, swimmers can swim half-marathons and quarter-marathons as well.
a. If a marathon swim is 10 km, how many meters would you swim in a half-marathon?
Answer:
Given,
In marathon swimming, athletes swim distances of 10 km or more.
1 km = 1000 m
10 km = 10,000 m
10,000/2 = 5000 meters
b. How many meters would you swim in a quarter-marathon?
Answer:
5000/2 = 2500 meters
Bridges in Mathematics Grade 3 Home Connections Unit 7 Module 3 Session 5 Answer Key
Division & Fractions
Question 1.
Complete the division facts.
20 ÷ 5 = _____________
20 ÷ 10 = _____________
18 ÷ 2 = _____________
18 ÷ 3 = ______________
18 ÷ 6 = ______________
18 ÷ 9 = ______________
Answer:
20 ÷ 5 = 4
20 ÷ 10 = 2
18 ÷ 2 = 9
18 ÷ 3 = 6
18 ÷ 6 = 3
18 ÷ 9 = 2
Question 2.
Divide each set into equal groups. Shade in some circles as directed.
ex: Shade in \(\frac{3}{5}\) of the circles.
Hint: Divide the set into 5 groups.
Shade in \(\frac{2}{10}\) of the circles.
Hint: Divide the set into 10 equal groups.
Answer:
Shade in \(\frac{1}{2}\) of the circles.
Hint: Divide the set into 2 equal groups.
Answer:
Shade in \(\frac{2}{6}\) of the circles.
Hint: Divide the set into 6 equal groups.
Answer:
Shade in \(\frac{1}{3}\) of the circles.
Hint: Divide the set into 3 equal groups.
Answer:
Shade in \(\frac{4}{9}\) of the circles.
Hint: Divide the set into 9 equal groups.
Answer:
Question 3.
a. Find two fractions above that are equal. Write them here.
Answer: 2/6 and 1/3 are equal.
b. How do you know the fractions are equal?
Answer: 2/6 and 1/3 are equal because they are both equal tp 6/18.
Question 4.
Write each of these fractions where they belong on the number line: \(\frac{1}{2}\), 1\(\frac{1}{4}\), \(\frac{1}{3}\), 1\(\frac{3}{4}\)
Answer:
Question 5.
Daniel, Emilia, Mia, and Aaron were picking pears in their grandparents’ orchard. They had each picked the same number of pears at lunch time, when their grandpa gave them each 6 more pears. Now the four kids had 80 pears in all.
a. How many pears did each child have before their grandpa gave them more? Show your work.
Answer:
Daniel, Emilia, Mia, and Aaron were picking pears in their grandparents’ orchard.
They had each picked the same number of pears at lunch time, when their grandpa gave them each 6 more pears. Now the four kids had 80 pears in all.
80 = (6 × 4) + (p × 4)
80 = 24 + 4p
80 – 24 = 4p
56 = 4p
p = 56/4
p = 14 pears
b. Mark the equation that could help you solve problem 5a.
p + 6 + 4 = 80
80 – (6 × 4) = p
80 = (6 × 4) + (p × 4)
(80 ÷ 4) + 6 = p
Answer: 80 = (6 × 4) + (p × 4)
c. Write an equation that shows another way to solve the problem. Use h for the unknown number.
Answer:
(h + 6) × 4 = 80
(80 ÷ 4) – 6 = h
Question 6.
The next day, the kids went to a nut orchard and picked up 220 hazelnuts. They gave \(\frac{1}{4}\) of the hazelnuts to their neighbor and their mother used \(\frac{2}{4}\) of the hazelnuts in muffins. The rest of the hazelnuts were saved for snacks.
a. How many hazelnuts went into the muffins? Show your work.
Answer:
The next day, the kids went to a nut orchard and picked up 220 hazelnuts.
220 × \(\frac{2}{4}\) = 110 hazelnuts
b. How many hazelnuts did the family have for snacking? Show your work.
Answer:
220 × \(\frac{1}{4}\) = 55 hazelnuts