The solutions to Bridges in Mathematics Grade 3 Home Connections Answer Key Unit 3 Module 3 can help students to clear their doubts quickly.
Bridges in Mathematics Grade 3 Home Connections Answer Key Unit 3 Module 3
Bridges in Mathematics Grade 3 Home Connections Unit 3 Module 3 Session 2 Answer Key
Estimates & Exact Answers
Question 1.
Use estimation to answer each question yes or no.
a. Sue has $346 dollars. She wants to buy a bike and still have $150 left. She found a bike that costs $189. Can she buy it and still have $150 left?
Answer:
Yes, she can buy the bike because she will be left with $157.
Explanation:
Number of dollars Sue has = $346.
Number of dollars left with her = $150.
Cost of the bike = $189.
Amount of money will be with her after buying bike = Number of dollars Sue has – Cost of the bike
= $346 – $189
= $157.
b. Bruce decided to give away some of his 400 baseball cards. He wants to keep at least 150 of them. If Bruce gives one friend 167 cards and another friend 112 cards, will he have at least 150 left?
Answer:
No, Bruce will not have at least 150 left because he will have 121 cards after giving to his friends.
Explanation:
Total number of baseball cards Bruce has = 400.
Number of baseball cards Bruce wants to keep = 150.
Number of baseball cards he gives to one of his friends = 167.
Number of baseball cards he gives to another friend = 112.
Number of baseball cards he has after giving to his friends = Total number of baseball cards Bruce has – (Number of baseball cards he gives to one of his friends + Number of baseball cards he gives to another friend)
= 400 – (167 + 112)
= 400 – 279
= 121.
c. Luis and Carlos are in a reading contest to see who can read the most pages. Luis wants to win by at least 150 pages. Carlos read 427 pages. If Luis reads 526 pages, will he win by at least 150 pages?
Answer:
No, he will not win by at least 150 pages if he needs 526 pages.
Explanation:
Number of pages Luis wants to win by at least = 150.
Number of pages Carlos reads = 427.
Number of pages Luis reads = 526.
Difference:
Number of pages Luis reads – Number of pages Carlos reads
= 526 – 427
= 99.
Question 2.
Estimate and solve.
First, estimate the difference between the two numbers.
You could round them and then subtract, or you could think about what you have to add to the smaller number to get to the bigger number.
Then find the exact difference between the two numbers.
Check your answer with your estimate to be sure it makes sense: if it doesn’t make sense, check your work or do it another way.
Answer:
Explanation:
Given Equations: Estimated Difference Exact difference
a. 487 – 309 = 190 178.
b. 1825 – 643 = 1150 1,182.
Show all your work when you solve these problems.
Question 3.
Angie’s grandma lives in Cleveland, Ohio, and is going to drive to Minneapolis, Minnesota, to visit Angie and her family. The two cities are 752 travel miles apart, and it takes 12 hours to drive that far.
a. Angie’s grandma wants to do the drive in two days. If she drives the same amount each day, how many miles will she drive each day?
Answer:
Number of miles she drives each day = 376.
Explanation:
Distance between the two cities = 752 miles.
Time it takes to drive that far = 12 hours.
Number of days Angie’s grandma wants to do the drive = 2.
Conversion:
1 day = 24 hours.
=> Number of miles she drives each day = Distance between the two cities ÷ 2
=> 752 ÷ 2
=> 376.
b. How many hours will she spend driving each day?
Answer:
Number of hours she spends driving each day = 6.
Explanation:
Distance between the two cities = 752 miles.
Time it takes to drive that far = 12 hours.
Number of days Angie’s grandma wants to do the drive = 2.
Conversion:
1 day = 24 hours.
=> Number of miles she drives each day = Distance between the two cities ÷ 2
=> 752 ÷ 2
=> 376.
Number of hours she spends driving each day = Time it takes to drive that far ÷ 2
= 12 ÷ 2
= 6.
Question 4.
CHALLENGE Christy’s family is driving from St. Louis, Missouri, to Boston, Massachusetts, to visit her cousins. The distance is 1,162 miles, and the driving time is 17 hours and 38 minutes. Christy’s mother wants to do the drive in 3 days, going about the same number of miles each day.
a. About how many miles will they drive each day?
Answer:
Number of miles will they drive each day = 387.33.
Explanation:
Distance between the St. Louis, Missouri, to Boston, Massachusetts = 1,162 miles.
Driving time between them = 17 hours 38 minutes.
Number of days Christy’s mother wants to do the drive = 3.
Conversion:
1 hour – 60 minutes.
17 hours = 60 × 17 = 1,020 minutes.
=> 17 hours 38 minutes = 1020 + 38 = 1,058 minutes.
Number of miles will they drive each day = Distance between the St. Louis, Missouri, to Boston, Massachusetts ÷ 3
= 1,162 ÷ 3
= 387.33.
b. About how many hours will they spend driving each day?
Answer:
Number of hours they spend driving each day = 5.87.
Explanation:
Distance between the St. Louis, Missouri, to Boston, Massachusetts = 1,162 miles.
Driving time between them = 17 hours 38 minutes.
Number of days Christy’s mother wants to do the drive = 3.
Conversion:
1 hour – 60 minutes.
?? hours – 38 minutes.
=> 38 ÷ 60 = 0.63 hours
Number of hours they spend driving each day = Driving time between them ÷ 3
= 17 .63 ÷ 3
= 5.87.
Bridges in Mathematics Grade 3 Home Connections Unit 3 Module 3 Session 4 Answer Key
Jump Rope for Charity
Question 1.
Solve each problem below. You may use any strategy that is efficient for you. Be sure to show your work.
a. Tyson and Amanda are jumping rope to raise money for charity. Amanda jumped rope 295 times. Tyson jumped 316 times. How many times total did they jump?
Answer:
Total number of times they jumped = 611.
Explanation:
Number of times Amanda jumped rope = 295.
Number of times Tyson jumped rope = 316.
Total number of times they jumped = Number of times Amanda jumped rope + Number of times Tyson jumped rope
= 295 + 316
= 611.
b. Beck and Sam are also jumping rope for charity. Beck jumped 345 times. Sam jumped 255 times. How many times did they jump in all?
Answer:
Total number of times they jumped = 600.
Explanation:
Number of times Beck jumped rope = 345.
Number of times Sam jumped rope = 255.
Total number of times they jumped = Number of times Beck jumped rope + Number of times Sam jumped rope
= 345 + 255
= 600.
c. Loretta and Claire are shooting baskets to raise money for field trips. Loretta made 123 baskets. Claire made 128 baskets. How many baskets did they make together?
Answer:
Total number of baskets they made together = 251.
Explanation:
Number of baskets Loretta made = 123.
Number of baskets Claire made = 128.
Total number of baskets they made together = Number of baskets Loretta made + Number of baskets Claire made
= 123 + 128
= 251.
Question 2.
Solve the two problems below, using any strategy you choose. Be sure to show your work.
Answer:
Explanation:
Given Equations:
275 + 336 = 611.
=> 275 plus 336 equals 611.
189 + 332 = 521.
=> 189 plus 332 equals 521.
Question 3.
CHALLENGE Stella and Colette are jumping rope to raise money for the local Children’s Hospital. Every time they jump 100 times, they earn one dollar. Stella jumped 487 times. Collette jumped 464 times. Did Stella and Colette jump enough times to raise $10 for the Children’s Hospital? Show all your work.
Answer:
No, they did not jump enough to raise $10 for the Children’s Hospital because they jumped less 49.
Explanation:
Number of times every time they jump = 100.
Number of times Stella jumped = 487.
Number of times Collette jumped = 464.
Total number of jumps they jumped = Number of times Stella jumped + Number of times Collette jumped
= 487 + 464
= 951.
Every time they jump 100 times, they earn one dollar.
=> Stella and Colette jump enough times to raise $10 for the Children’s Hospital
=> Number of times they need to jump to earn $10 = 100 × 10 = 1000.
Total number of jumps they jumped = 951.
Difference:
1000 – 951 = 49.