Practicing the Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 6 Module 3 will help students analyze their knowledge of concepts.
Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 6 Module 3
Bridges in Mathematics Grade 2 Home Connections Unit 6 Module 3 Session 1 Answer Key
Missing Numbers
Question 1.
One number from each family is lost! Write the missing number in the triangle. Use the pictures to help. Then write 2 addition and 2 subtraction equations to match.
ex:
a.
Answer:
Total = 12
4 + 8 = 12
8 + 4 = 12
12 – 8 = 4
12 – 4 = 8
b.
Answer:
15 – 9 = 6
9 + 6 = 15
6 + 9 = 15
15 – 6 = 9
c.
Answer:
15 – 7 = 8
15 – 8 = 7
8 + 7 = 15
7 + 8 = 15
Question 2.
Fill in the missing numbers to solve these equations.
6 + 7 + 3 = _______________
8 + 1 + ____________ = 18
5 + _________ + 2 = 13
13 – ___________ = 8
12 – _________ = 7
12 – 4 = ___________
Answer:
6 + 7 + 3 = 6 + 10 = 16
By adding 6, 7 and 3 we get 16.
8 + 1 + ____________ = 18
Let the unknown number be x.
8 + 1 + x = 18
9 + x = 18
x = 18 – 9
x = 9
So, the missing number is 9.
5 + _________ + 2 = 13
Let the unknown number be x.
5 + x + 2 = 13
7 + x = 13
x = 13 – 7
x = 6
13 – ___________ = 8
Let the unknown number be x.
13 – x = 8
13 – 8 = x
x = 5
12 – _________ = 7
Let the unknown number be x.
12 – x = 7
12 – 7 = x
x = 5
12 – 4 = ___________
Let the unknown number be x.
12 – 4 = x
x = 8
Question 3.
CHALLENGE Fill in the missing numbers to solve these equations.
40 + 18 + 23 = ____________
60 + 47 + __________ = 126
____________ + 67 + 26 = 131
Answer:
40 + 18 + 23 = ____________
58 + 23 = 81
So, the missing number is 81.
60 + 47 + __________ = 126
Let the missing number be x.
60 + 47 + x = 126
107 + x = 126
x = 126 – 107
x = 19
60 + 47 + 19 = 126
____________ + 67 + 26 = 131
Let the missing number be x.
x + 67 + 26 = 131
x + 93 = 131
x = 131 – 93
x = 38
38 + 67 + 26 = 131
Question 4.
Draw a line to match each problem with its equation. Then find the answers.
Answer:
Question 5.
CHALLENGE Solve these equations.
2 + 5 – 4 + 8 = _____________
8 + 12 + 34 = _____________
20 + 30 – ____________ = 30 – 5
90 + 170 + 64 = ______________
30 – 20 + ____________ = 25
123 + 48 – ____________ = 123 – 5
____________ + 5 = 21
250 + 48 + 2 = ____________
350 + 118 + 6 = ______________
Answer:
2 + 5 – 4 + 8 = _____________
7 – 4 + 8
3 + 8 = 11
8 + 12 + 34 = _____________
20 + 34 = 54
20 + 30 – ____________ = 30 – 5
20 + 30 – x = 25
50 – x = 25
50 – 25 = x
x = 25
90 + 170 + 64 = ______________
160 + 64 = 224
30 – 20 + ____________ = 25
30 – 20 + x = 25
10 + x = 25
x = 25 – 10
x = 15
123 + 48 – ____________ = 123 – 5
171 – x = 118
171 – 118 = x
53 = x
123 + 48 – 53 = 123 – 5
____________ + 5 = 21
x + 5 = 21
x = 21 – 5
x = 16
16 + 5 = 21
250 + 48 + 2 = ____________
250 + 50 = 300
350 + 118 + 6 = ______________
350 + 124 = 474
Bridges in Mathematics Grade 2 Home Connections Unit 6 Module 3 Session 3 Answer Key
Halves, Bowls & Vans
Question 1.
Circle the correct answer.
a. If you cut this square in half, what two shapes will you get?
Answer:
b. If you cut this rectangle in half, what two shapes will you get?
Answer:
c. If you cut this hexagon in half, what two shapes will you get?
Answer:
Question 2.
Find each difference.
Answer:
By subtracting 5 from 10 we get 5.
By subtracting 8 from 16 we get 8.
By subtracting 10 from 20 we get 10.
By subtracting 6 from 12 we get 6.
By subtracting 7 from 14 we get 7.
By subtracting 9 from 18 we get 9.
By subtracting 3 from 6 we get 3.
By subtracting 20 from 40 we get 20.
By subtracting 30 from 60 we get 30.
By subtracting 12 from 24 we get 12.
By subtracting 15 from 30 we get 15.
By subtracting 40 from 80 we get 40.
By subtracting 50 from 100 we get 50.
By subtracting 11 from 22 we get 11.
By subtracting 200 from 400 we get 200.
By subtracting 300 from 600 we get 300.
By subtracting 200 from 100 we get 100.
By subtracting 60 from 120 we get 60.
By subtracting 90 from 180 we get 90.
By subtracting 80 from 160 we get 80.
By subtracting 70 from 140 we get 70.
Question 3.
Josh got 12 goldfish. He wants to put 3 goldfish in each little fishbowl. How many little fishbowls will he need? Show your work.
Josh will need ____________ little fishbowls.
Answer:
Given,
Josh got 12 goldfish.
He wants to put 3 goldfish in each little fishbowl.
12 ÷ 3 = 4
Josh will need 4 little fishbowls.
Question 4.
CHALLENGE 36 kids are going to the park. Each van can hold 6 kids. How many vans will they need to take all the kids to the park? Show your work.
They will need _____________ vans to take all the kids to the park.
Answer:
Given,
36 kids are going to the park. Each van can hold 6 kids.
36 ÷ 6 = 6
They will need 6 vans to take all the kids to the park.
Bridges in Mathematics Grade 2 Home Connections Unit 6 Module 3 Session 5 Answer Key
Half & Half
Question 1.
Circle the shape in each box that has been divided in half.
a.
Answer:
Two equal parts of one whole thing are called halves.
b.
Answer:
Two equal parts of one whole thing are called halves.
c.
Answer:
Two equal parts of one whole thing are called halves.
d.
Answer:
Two equal parts of one whole thing are called halves.
Question 2.
Circle the shapes that show two halves. Then color in half of each of them.
a.
Answer:
Two equal parts of one whole thing are called halves.
b.
Answer:
Two equal parts of one whole thing are called halves.
c.
Answer:
Two equal parts of one whole thing are called halves.
Question 3.
Color \(\frac{1}{2}\) of the objects in each box.
a.
Answer:
There are 10 objects
10 ÷ 2 = 5
We have to color 5 objects.
b.
Answer:
There are 8 objects.
8 ÷ 2 = 4
We have to color 4 objects.
c.
Answer:
There are 3 apples.
3 ÷ 2 = 1.5
d.
Answer:
There are 4 objects in the above figure.
4 ÷ 2 = 2
Question 4.
Rob had 16 shells. He gave half of them to his brother. How many shells does Rob have now? Show your work.
Rob has ____________ shells now.
Answer:
Given,
Rob had 16 shells. He gave half of them to his brother.
16 ÷ 2 = 8
Rob has 8 shells now.
Question 5.
Jess had 28 marbles. She gave half of them to Eli. Then Jess gave half of the marbles she had left to her sister. How many marbles does Jess have now? Show your work.
Jess has _____________ marbles now.
Answer:
Given,
Jess had 28 marbles. She gave half of them to Eli.
28 ÷ 2 = 14
Then Jess gave half of the marbles she had left to her sister.
14 ÷ 2 = 7 marbles
Thus Jess has 7 marbles now.