Practicing the Bridges in Mathematics Grade 2 Home Connection Answer Key Unit 4 Module 3 will help students analyze their knowledge of concepts.
Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 4 Module 3
Bridges in Mathematics Grade 2 Home Connections Unit 4 Module 3 Session 1 Answer Key
Subtraction Facts & Coin Problems
Question 1.
Complete the problems below.
a. Circle all the Subtract 2 facts in blue. Then find each difference.
(example 10 – 2 or 16 – 2)
Answer:
By subtracting 2 from 15 we get 13.
By subtracting 2 from 11 we get 9.
By subtracting 2 from 19 we get 17.
By subtracting 2 from 13 we get 11.
By subtracting 2 from 14 we get 12.
By subtracting 2 from 29 we get 27.
b. Circle all the Subtract Half facts in red. Then find each difference.
(example 12 – 6 or 14 – 7)
Answer:
c. Circle all the Take Away Ten facts in green. Then find each difference.
(example 14 – 10 or 19 – 10)
Answer:
d. Circle all the Back to Ten facts in purple. Then find each difference.
(example 13 – 3 or 17 – 7)
Answer:
e. And now—see if you can use the facts you’ve circled and solved to help you figure out the rest!
Answer:
Question 2.
Sara has four coins in her right pocket. Together, they are worth 304. What four coins does Sara have in her right pocket? Show your work.
The four coins Sara has in her right pocket are
Answer:
304 = 200 + 100 + 2 + 2
200Rs. + 100Rs. + 2Rs. + 2Rs.
Question 3.
Sara has seven coins in her left pocket. Together, they are worth 244. What seven coins does Sara have in her left pocket? Show your work.
The seven coins Sara has in her left pocket are
Answer:
Given,
Sara has seven coins in her left pocket. Together, they are worth 244.
204 = 100 + 50 + 50 + 20 + 20 + 2 + 2
Bridges in Mathematics Grade 2 Home Connections Unit 4 Module 3 Session 3 Answer Key
Computation & Story Problems
Question 1.
Find each sum.
Answer:
By adding 9 and 6 we get 15.
By adding 9 and 9 we get 18.
By adding 10 and 7 we get 17.
By adding 9 and 7 we get 16.
By adding 10 and 6 we get 16.
By adding 9 and 10 we get 19.
By adding 9 and 4 we get 13.
By adding 9 and 3 we get 12.
By adding 10 and 7 we get 17.
By adding 11 and 9 we get 20.
By adding 8 and 9 we get 17.
By adding 4 and 10 we get 14.
By adding 9 and 5 we get 14.
By adding 2 and 9 we get 11.
By adding 20 and 9 we get 29.
By adding 40 and 12 we get 52.
By adding 30 and 8 we get 38.
By adding 60 and 15 we get 75.
By adding 30 and 17 we get 47.
By adding 90 and 8 we get 98.
By adding 80 and 14 we get 94.
By adding 20 and 29 we get 49.
By adding 32 and 20 we get 52.
By adding 58 and 30 we get 88.
By adding 62 and 20 we get 82.
By adding 40 and 39 we get 79.
By adding 70 and 23 we get 93.
By adding 75 and 10 we get 85.
Question 2.
Find each difference.
Answer:
Question 3.
Sawyer is preparing a salad for dinner. He has 17 radishes and 8 tomatoes.
a. How many more radishes than tomatoes does Sawyer have? Show your work.
Sawyer has ____ more radishes than tomatoes.
Answer:
Sawyer is preparing a salad for dinner. He has 17 radishes and 8 tomatoes.
17 – 8 = 9
Sawyer has 9 more radishes than tomatoes.
b. How many radishes and tomatoes does Sawyer have in all? Show your work.
Sawyer has ____ radishes and tomatoes in all.
Answer:
Sawyer is preparing a salad for dinner. He has 17 radishes and 8 tomatoes.
17 + 8 = 25
Sawyer has 25 radishes and tomatoes in all.
Question 4.
Chanel went to the craft store with 3 quarters and 2 dimes. She bought three different things from the list below. What three things might she have bought? Find at least two different answers. Show your work.
Answer:
Chanel went to the craft store with 3 quarters and 2 dimes.
1 quarter = $0.25
3 quarters = $0.25 × 3 = $0.75
1 dime = $0.10
Thus Chanel can buy 1 Art Card, Mini pencils a nd erasers.
Bridges in Mathematics Grade 2 Home Connections Unit 4 Module 3 Session 5 Answer Key
Math with Pencil Puppy
Question 1.
Add. Use the pictures of base ten pieces to help. The second set of pieces for each problem is hidden, so you will have to draw them or imagine them.
a.
Answer:
By adding 28 and 13 we get 41.
b.
Answer:
By adding 36 and 12 we get 48.
Question 2.
Find each sum.
70 + 8 = ____ 40 + 7 = _____ 30 + 16 = ____ 20 + 13 = _____
Answer:
70 + 8 = 78
By adding 70 and 8 we get 78.
40 + 7 = 47
By adding 40 and 7 we get 47.
30 + 16 = 46
By adding 30 and 16 we get 46.
20 + 13 = 33
By adding 20 and 13 we get 33.
Question 3.
Use Pencil Puppy’s strategy for adding 2-digit numbers. Remember, she adds the tens first. Then she adds the ones. Then she finds the total.
ex
Answer:
58 + 28 = 86
5 tens + 2 tens = 7 tens
8 ones + 8 ones = 16 ones
7 tens + 1 tens + 6 ones = 8 tens 6 ones
a.
Answer:
4 tens + 3 tens = 7 tens
3 ones + 9 ones = 12 ones
7 tens + 1 ten + 2 ones = 8 tens 2 ones
43 + 39 = 82
b.
Answer:
2 tens + 4 tens = 6 tens
7 ones + 5 ones = 12 ones
6 tens + 1 ten + 2 ones = 7 tens 2 ones
c.
Answer:
1 ten + 2 tens = 3 tens
6 ones + 2 ones = 8 ones
3 tens + 8 ones = 38
d.
Answer:
3 tens + 5 tens = 8 tens
7 ones + 3 ones = 10 ones = 1 ten
80 + 10 = 90
e.
Answer:
3 tens + 5 tens = 8 tens
3 ones + 8 ones = 11 ones
8 tens + 1 ten + 1 ones = 9 ten 1 ones
Question 4.
Jen had some flowers. Her friend gave her 9 more flowers. Now she has 14 flowers. How many flowers did Jen have to start with? Show your work.
Jen had ____ flowers to start with.
Answer:
Given,
Jen had some flowers. Her friend gave her 9 more flowers. Now she has 14 flowers.
14 – 9 = 5 flowers
Thus Jen starts with 5 flowers.
Question 5.
CHALLENGE Jon had 4 oranges. He cut each orange into 8 slices. How many orange slices did he have in all? Show your work.
Jon had ____ orange slices in all.
Answer:
Given,
Jon had 4 oranges.
He cut each orange into 8 slices.
8 × 4 = 32 slices
Thus Jon has 32 slices in all.