The solutions to Bridges in Mathematics Grade 3 Student Book Answer Key Unit 3 Module 3 can help students to clear their doubts quickly.
Bridges in Mathematics Grade 3 Student Book Answer Key Unit 3 Module 3
Bridges in Mathematics Grade 3 Student Book Unit 3 Module 3 Session 1 Answer Key
Work Place Instructions 3D Round & Add Hundreds
Each pair of players needs:
- 1 3D Round & Add Hundreds Record Sheet to share
- 1 spinner overlay
- one 1-6 die
1. Players decide who will spin and who will record the numbers. Players switch roles for each turn.
2. Players roll the die to get the first digit of each 3-digit number, then spin the spinner 4 times to fill in the rest of the digits on the record sheet.
3. Players work together to round each number formed to the nearest 100 and fill in the blanks under Sum of Rounded Numbers.
4. Players work together to find the sum of the actual numbers and the sum of the rounded numbers.
5. Players’ score is the difference between the sum of the actual numbers and the sum of the rounded numbers.
6. Players continue spinning, rounding and adding until they have played all 5 rounds of the game.
Then they add their scores from each round to get their final score.
Note: Players can work together to play the game again and see if they can get a lower score the second time around.
Game Variations
A. Students can each use their own recording sheet and take turns, each spinning and recording for themselves. Low score wins the game.
B. Instead of recording the numbers in order as they roll and spin, players can roll the die twice, spin 4 times and then arrange the six digits to form the two 3-digit numbers that will yield the lowest score.
Rounding Review
When you are rounding, look at the digit one place to the right of where you want to round. If you round to the nearest ten, look at the digit in the ones place. If you round to the nearest hundred, look at the digit in the tens place. If you round to the nearest thousand, look at the digit in the hundreds place.
If the digit is 5 or higher, round up. If it is less than 5, round down.
Question 1.
Underline the number in the ones place. Then circle up or down to show whether you are rounding up or down. Then round the number to the nearest ten.
ex 334 rounds up/
to 330.
a. 476 rounds up/down to ______.
Answer:
b. 2,053 rounds up/down to ____.
Answer:
c. 4,388 rounds up/down to _____
Answer:
Question 2.
Underline the number in the tens place. Then circle up or down to show whether you are rounding up or down. Then round the number to the nearest hundred.
a. 328 rounds up/down to _____.
Answer:
b. 961 rounds up/down to ____.
Answer:
c. 4,553 rounds up/down to ____.
Answer:
d. 3,348 rounds up/down to ____.
Answer:
Question 3.
Underline the number in the hundreds place. Then circle up or down to show whether you are rounding up or down. Then round the number to the nearest thousand.
a. 4,389 rounds up/down to _____.
Answer:
b. 2,503 rounds up/down to _____.
Answer:
c. 1,437 rounds up/down to ____.
Answer:
d. 6,614 rounds up/down to ____.
Answer:
Question 4.
Complete the multiplication facts.
3 × 3 = ____ 4 × 4 = ____ 3 × 8 = ____ 4 × 10 = ____ 3 × 5 = ____ 4 × 6 = _____
4 × 7 = ____ 3 × 4 = ____ 4 × 8 = ____ 3 × 7 = ____ 4 × 5 = ____ 3 × 6 = _____
Answer:
Multiply both the given numbers and get the corresponding result. Then , write the obtained result in given respective blank as shown below.
3 × 3 = 9  4 × 4 = 16 3 × 8 = 24 4 × 10 = 40 3 × 5 = 15 4 × 6 = 24
4 × 7 = 28 3 × 4 = 12 4 × 8 = 32 3 × 7 = 21 4 × 5 = 20 3 × 6 = 18
Bridges in Mathematics Grade 3 Student Book Unit 3 Module 3 Session 2 Answer Key
Understanding Place Value
Question 1.
Brandon, Monica, and Casey are discussing what number this collection represents. Brandon says it is 1,002. Casey says it is 1,200. Monica says it is 1,020.
a. Who is right? ______
Answer:
Monica is right in the Given number Collection.
b. Why?
Answer:
As per the given diagram, there are ten hundred boxes and two 10 boxes
10 x 100 = 1000
2 x 10 = 20
Monica is right which is 1020. Hence ,Remaining members Brandon and Casey are Wrong.
c. Write the correct number in words.
Answer:
The number in words is one hundred and twenty.
d. Write the correct number in expanded form. __________
Answer:
The number in Expanded form is 1000 + 20 which gives the value as 1020.
Question 2.
Brandon says this is 2,031. Casey says it is 231. Monica says it is 2,301.
a. Who is right? ______
Answer:
Monica is right among the three members.
b. Why?
Answer:
As per the given diagram, there are two ten hundred boxes and three 100 boxes and a single dot which is equal to 0ne.
10 x 100Â + 10 x 100 = 1000
3 x 100 = 20
1 x 1 = 1
Monica is right which is 2301. Hence ,Remaining members Brandon and Casey are Wrong.
c. Write the correct number in words.
Answer:
The correct number 2301 in words is Two thousand thirty one.
d. Write the correct number in expanded form. ________
Answer:
The correct number 2031 in expanded form is 2000 + 300 + 1Â which is equal to 2301.
Bridges in Mathematics Grade 3 Student Book Unit 3 Module 3 Session 3 Answer Key
Travel Miles Between Cities
Pages & Miles
Question 1.
Tasha and her friends are in a reading contest. Last year, the winning team read 2,546 pages. So far, Tasha has read 186 pages. Her friend Lisa has read 203 pages, and her friend Robert has read 215 pages.
a. Estimate how many more pages they need to read altogether to beat last year’s winning team.
Answer:
Number of pages read by the winning team = 2,546
Number of pages read by her friend Tasha = 186
Number of pages read by her friend Lisa = 203
Number of pages read by her friend Robert = 215
Number of pages read by both the friends Lisa and Robert = 186+ 203 + 215
= 604
Number of pages they need to read altogether for beating the Last Year’s Winning Team = ?
= 2546 – 604
= 1942
Therefore , they must read one Extra page i.e. 1943 in order to beat the Last year Winning Team
b. Exactly how many pages do they need to read to beat last year’s winning team? Show all your work. Make sure your answer comes close to your estimate. If it does not, check your work or solve the problem another way.
Answer:
Even if they read 1 page more than 1942 pages i.e. 1942 + 1 = 1943 for beating the Last year Winning Team.
Question 2.
Esteban and his mom are driving to see his grandma. They have to drive 865 miles in all. On Monday, they drove 186 miles. On Tuesday, they drove 267 miles.
a. Estimate how many miles they will need to drive on Wednesday to get to his grandma’s house.
Answer:
Number of miles driven on Monday = 186
Number of miles driven on Tuesday= 267
Number of miles driven on both Monday and Tuesday = 186 + 267 = 453
Number of miles driven they need to drive = 865
Number of miles they need to drive on Wednesday to get to his grandma’s house = ?
= 865 – 453
= 412 miles.
b. Exactly how many miles do they need to drive on Wednesday to get to his grandma’s house? Show all your work. Make sure your answer comes close to your estimate. If it does not, check your work or solve the problem another way.
Answer:
412 Miles are needed to drive on Wednesday for getting to his grandma’s house.
Bridges in Mathematics Grade 3 Student Book Unit 3 Module 3 Session 4 Answer Key
Two Travel Miles Problems
Question 1.
Our family is planning a vacation. My mom and dad don’t have much time off, so we are looking for a city close by. We live in Houston and are thinking about going to see the Country Music Hall of Fame in Nashville or going to Disney World in Orlando. What is the difference between the distances we would have to travel to each city?
Answer:
Distance of Houston = 960
Distance of Nashville = 686
Difference between the both cities = ?
= 980 – 686
= 294
Question 2.
Rachel is traveling from Denver to Nashville to see her cousin. If she has already traveled 356 miles, how many more miles does she need to travel?
Answer:
Distance from Denver to Nashville = 1,023 miles
Distance already travelled by Rachel = 356 miles
Number of miles she need to travel =?
= 1023 – 356
= 667 miles.
Round & Subtract
Question 1.
Rounding numbers can help you make good estimates. Round each pair of numbers to the nearest ten and then subtract the rounded numbers to estimate the difference.
The difference between 867 and 485 is about 380.
a.
The difference between 608 and 263 is about _____.
Answer:
Given 608 and 263 are the numbers. First round them for the nearest ten. Then, Estimate the difference between 608 and 263 which is about 345.
b.
The difference between 732 and 546 is about _____.
Answer:
Given 732 and 546 are the numbers. First round them for the nearest ten. Then, Estimate the difference between 732 and 546 which is about 180.
Question 2.
Now round to the nearest hundred and then subtract to estimate the difference.
a.
The difference between 1,508 and 620 is about _____.
Answer:
Given 1500 and 620 are the numbers. First round them for the nearest ten. Then, Estimate the difference between 1500 and 620 which is about 888.
b.
The difference between 2,482 and 936 is about _____
Answer:
Given 2482 and 936 are the numbers. First round them for the nearest ten. Then, Estimate the difference between 2482 and 936 which is about 1546.
