Practicing the Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 7 Module 4 will help students analyze their knowledge of concepts.
Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 7 Module 4
Bridges in Mathematics Grade 2 Home Connections Unit 7 Module 4 Session 2 Answer Key
Equations & Story Problems
Question 1.
Fill in the missing numbers.
a. 15 = ___________ + 7
Answer:
15 = _____8______ + 7.
Explanation:
Missing numbers:
15 = ?? + 7
=> 15 – 7 = ??
=> 8 = ??.
b. 5 + ___________ = 13
Answer:
5 + ____8_______ = 13.
Explanation:
Missing numbers:
5 + ?? = 13.
?? = 13 – 5
?? = 8.
c. 14 – ___________ = 8
Answer:
14 – ____6_______ = 8.
Explanation:
Missing numbers:
14 – ?? = 8.
14 – 8 = ??
6 = ??.
d. 16 – ___________ = 7
Answer:
16 – ____9_______ = 7.
Explanation:
Missing numbers:
16 – ___________ = 7.
16 – 7 = ??
9 = ??.
e. 9 + 6 = ___________ + 8
Answer:
9 + 6 = _____6______ + 8.
Explanation:
Missing numbers:
9 + 6 = ___________ + 8.
14 = ?? + 8
14 – 8 = ??
6 = ??.
f. 12 – 5 = 4 + ___________
Answer:
12 – 5 = 4 + ____3_______.
Explanation:
Missing numbers:
12 – 5 = 4 + ??
7 = 4 + ??
7 – 4 = ??
3 = ??.
g. 13 – 7 = 3 + ___________
Answer:
13 – 7 = 3 + ____3_______.
Explanation:
Missing numbers:
13 – 7 = 3 + ??
6 = 3 + ??
6 – 3 = ??
3 = ??
Question 2.
Fill in the missing numbers.
40 + 50 = ___________
30 + ___________ = 60
___________ + 70 = 90
25 + 35 = ___________
25 + ___________ = 50
___________ + 40 = 85
80 – 40 = ___________
70 – ___________ = 20
___________ – 30 = 30
95 – 40 = ___________
55 – ___________ = 35
___________ – 25 = 25
Answer:
Missing numbers:
40 + 50 = ____90_______.
30 + ___30________ = 60.
_____20______ + 70 = 90.
25 + 35 = ____60_______.
25 + ____25_______ = 50.
____45_______ + 40 = 85.
80 – 40 = ____40_______.
70 – ____50_______ = 20.
_____60______ – 30 = 30.
95 – 40 = __55_________.
55 – _____20______ = 35.
_____50______ – 25 = 25.
Explanation:
Missing numbers in equations:
40 + 50 = ??
=> 40 + 50 = 90.
30 + ?? = 60.
=> ?? = 60 – 30
=> ?? = 30.
?? + 70 = 90.
=> ?? = 90 – 70
=> ?? = 20.
25 + 35 = ??
=> 60 = ??
25 + ?? = 50.
=> ?? = 50 – 25
=> ?? = 25.
?? + 40 = 85.
=> ?? = 85 – 40
=> ?? = 45.
80 – 40 = ??
=> 40 = ??.
70 – ?? = 20.
=> 70 – 20 = ??
=> 50 = ??.
?? – 30 = 30.
=> ?? = 30 + 30
=> ?? = 60.
95 – 40 = ?? .
=> 55 = ??.
55 – ?? = 35.
=> 55 – 35 = ??
=> 20 = ??.
?? – 25 = 25.
=> ?? = 25 + 25
=> ?? = 50.
Question 3.
CHALLENGE Fill in the missing numbers.
250 = ___________ + 6
90 + 70 = ____________ + 17
140 – 60 = 30 + _______________
Answer:
Missing numbers:
250 = _____244______ + 6.
90 + 70 = ____143________ + 17.
140 – 60 = 30 + ______50_________.
Explanation:
Missing numbers in equations:
250 = ??+ 6.
=> 250 – 6 = ??
=> 244 = ??.
90 + 70 = ?? + 17.
=> 160 = ?? + 17
=> 160 – 17 = ??
=> 143 = ??.
140 – 60 = 30 + ??
=> 80 = 30 + ??
=> 80 + 30 = ??
=> 50 = ??.
Fill in the blanks with words that make sense and seem interesting. Solve each problem. Show your work.
Question 4.
Kendra has 57 ____________ in her top drawer.
She has 28 ____________ in her bottom drawer.
How many are there in all? ____________
Answer:
Kendra has 57 pencils in her top drawer.
She has 28 pens in her bottom drawer.
Total number of pencils and pens she has in all = 85.
Explanation:
Number of pencils Kendra has in her top drawer = 57.
Number of pens she has in her bottom drawer = 28.
Total number of pencils and pens she has in all = Number of pencils Kendra has in her top drawer + Number of pens she has in her bottom drawer
= 57 + 28
= 85.
Question 5.
Lin spent 39 dollars for a ____________.
He spent 18 dollars for a ____________.
How much did he spend in all? ____________
Answer:
Lin spent 39 dollars for a ___pizza _________.
He spent 18 dollars for a ___potato chips_________.
Total number of dollars he spent in all = 57.
Explanation:
Number of dollars Lin spent for buying a pizza = 39.
Number of dollars Lin spent for buying a potato chips = 18.
Total number of dollars he spent in all = Number of dollars Lin spent for buying a pizza + Number of dollars Lin spent for buying a potato chips
= 39 + 18
= 57.
Question 6.
Akiko had 72 ____________.
She gave 26 of them to her friend.
How many does she have left? ____________
Answer:
Number of apples she have left = 46.
Explanation:
Number of apples Akiko had = 72.
Number of apples Akiko gave to her friend = 26.
Number of apples she have left = Number of apples Akiko had – Number of apples Akiko gave to her friend
= 72 – 26
= 46.
Question 7.
Mr. Smith baked 48 ____________.
The dog ate 19 of them.
How many are left? ____________
Answer:
Number of cookies are left = 29.
Explanation:
Number of cookies Mr. Smith baked = 48.
Number of cookies the dog ate of them = 19.
Number of cookies are left = Number of cookies Mr. Smith baked – Number of cookies the dog ate of them
= 48 – 19
= 29.
Question 8.
Frank saw 51 ____________.
Then 24 of them flew away.
How many were left? ____________
Answer:
Number of piegons were left = 27.
Explanation:
Number of piegons Frank saw = 51.
Number of piegons flew away = 24.
Number of piegons were left = Number of piegons Frank saw – Number of piegons flew away
= 51 – 24
= 27.
Bridges in Mathematics Grade 2 Home Connections Unit 7 Module 4 Session 4 Answer Key
Cleaning Desks & Measuring Lines
Question 1.
Finish the graph on the right. Give it a title. Color in the columns to show what the kids found in their desks.
Answer:
Explanation:
Number of extra pencils = 44.
Number of extra scissors = 18.
Number of extra glue sticks = 12.
Number of extra erasers = 15.
Number of extra books = 9.
Question 2.
How many more pencils than erasers did the kids find? Show your work.
Answer:
29 more pencils than erasers did the kids found.
Explanation:
Number of extra pencils = 44.
Number of extra erasers = 15.
Difference:
Number of extra pencils – Number of extra erasers
= 44 – 15
= 29.
Question 3.
CHALLENGE How many extra things did they find in all? Show your work.
Answer:
26 extra things they found in all.
Explanation:
Number of extra pencils = 44.
Number of extra scissors = 18.
Difference:
Number of extra pencils – Number of extra scissors
= 44 – 18
= 26.
Question 1.
Here are two lines. Put an X on the one you think is shorter.
a. Measure each line. Use the centimeter side of your ruler.
Line A is _____________ centimeters long.
Line B is _____________ centimeters long.
Answer:
Line A is _____15________ centimeters long.
Line B is _____20________ centimeters long.
Explanation:
Number of centimeters Line A = 15.
Number of centimeters Line B = 20.
b. Which line is shorter? (Circle one.)
Line A
Line B
Answer:
Line A is shorter.
Explanation:
Number of centimeters Line A = 15.
Number of centimeters Line B = 20.
c. How much shorter is it? Show your work. Mark the answer clearly.
Answer:
Line A is shorter than Line B.
Explanation:
Number of centimeters Line A = 15.
Number of centimeters Line B = 20.
Difference:
Number of centimeters Line B = 20 – Bigger.
Number of centimeters Line A = 15 – Smaller.
Question 2.
Here are two crooked lines. Put an x on the one you think is longer.
a. Measure each crooked line. Use the centimeter side of your ruler.
Crooked line C is _____________ centimeters long.
Crooked line D is _____________ centimeters long.
Answer:
Crooked line C is ______21_______ centimeters long.
Crooked line D is ______25_______ centimeters long.
Explanation:
Number of centimeters Crooked line C = 2cm + 8cm + 5cm + 4cm + 2cm = 21cm.
Number of centimeters Crooked line D = 1cm + 3cm + 9cm + 10cm + 2cm = 25cm.
b. Which crooked line is longer? (Circle one.)
Crooked Line C
Crooked Line D
Answer:
Crooked Line D is longer than Crooked Line C.
Explanation:
Number of centimeters Crooked line C = 2cm + 8cm + 5cm + 4cm + 2cm = 21cm.
Number of centimeters Crooked line D = 1cm + 3cm + 9cm + 10cm + 2cm = 25cm.
c. How much longer is it? Show your work. Mark the answer clearly.
Answer:
4 cm longer is Crooked line DÂ than Crooked line C.
Explanation:
Number of centimeters Crooked line C = 2cm + 8cm + 5cm + 4cm + 2cm = 21cm.
Number of centimeters Crooked line D = 1cm + 3cm + 9cm + 10cm + 2cm = 25cm.
Difference:
Number of centimeters Crooked line D – Number of centimeters Crooked line C
= 25 – 21
= 4cm.