The answers to Bridges in Mathematics Grade 1 Home Connections Answer Key Unit 4 Module 4 are undoubtedly the best study material a student can get hold of.
Bridges in Mathematics Grade 1 Home Connections Answer Key Unit 4 Module 4
Bridges in Mathematics Grade 1 Home Connections Unit 4 Module 4 Session 2 Answer Key
Penguin Problems
Question 1.
Find the difference for each problem below.
Answer:
Addition:
Explanation:
Given Equations:
10 – 7 = 3.
10 – 3 = 7.
10 – 9 = 1.
10 – 4 = 6.
10 – 8 = 2.
10 – 6 = 4.
10 – 5 = 5.
10 – 10 = 0.
10 – 2 = 8.
10 – 1 = 9.
10 – 0 = 10.
10 – 6 = 4.
Question 2.
Fill in the missing number.
___________ – 7 = 3
10 – ___________ = 6
10 – ___________ = 2
___________ – 4 = 6
10 – ___________ = 1
10 – ___________= 5
___________ – 8 = 2
10 – ___________ = 0
10 – ___________ = 10
10 – ___________ = 3
10 – ___________ = 4
10 – ___________ = 7
Answer:
Subtraction:
10 – 7 = 3.
10 – 4 = 6.
10 – 8 = 2.
10 – 4 = 6.
10 – 9 = 1.
10 – 5 = 5.
10 – 8 = 2.
10 – 10 = 0.
10 – 0 = 10.
10 – 7 = 3.
10 – 6 = 4.
10 – 3 = 7.
Explanation:
Given Equations:
?? – 7 = 3.
=> ?? = 3 + 7
=> ?? = 10.
10 – ?? = 6.
=> 10 – 6 = ??
=> 4 = ??.
10 – ?? = 2.
=> 10 – 2 = ??
=> 8 = ??.
?? – 4 = 6.
=> ?? = 6 + 4
=> ?? = 10.
10 – ?? = 1.
=> 10 – 1 = ??
=> 9 = ??.
10 – ?? = 5.
=> 10 – 5 = ??
=> 5 = ??.
?? – 8 = 2.
=> ?? = 2 + 8
=> ?? = 10.
10 – ?? = 0.
=> 10 – 0 = ??
=> 10 = ??.
10 – ?? = 10.
=> 10 – 10 = ??
=> 0 = ??.
10 – ?? = 3.
=> 10 – 3 = ??
=> 7 = ??.
10 – ?? = 4.
=> 10 – 4 = ??
=> 6 = ??.
10 – ?? = 7.
=> 10 – 7 = ??
=> 3 = ??.
Question 3.
Use pictures, numbers, and words to show how you solve each problem.
a. There are 8 penguins 
on the rocks.
There are 5 penguins in the water. 
How many more penguins are there on the rocks than in the water?
There are _____________ more penguins on the rocks than in the water.
Answer:
3 more penguins are there on the rocks than in the water.
There are 3 more penguins on the rocks than in the water.
Explanation:
Number of penguins on the rocks = 8.
Number of penguins in the water = 5.
Difference:
Number of penguins on the rocks – Number of penguins in the water
= 8 – 5
= 3.
b. CHALLENGE There are 14 penguins on the rocks.
Half as many are swimming.
How many are in the water? How many in all?
There are _____________ penguins in the water.
There are _____________ penguins in all.
Answer:
Total number of penguins in all = 21.
There are 7 penguins in the water.
There are 21 penguins in all.
Explanation:
Number of penguins on the rocks = 14.
Half as many are swimming.
=> Number of penguins swimming = Number of penguins on the rocks ÷ 2
= 14 ÷ 2
= 7.
Number of penguins are in water = 7.
Total number of penguins in all = Number of penguins on the rocks + Number of penguins are in water
= 14 + 7
= 21.
Bridges in Mathematics Grade 1 Home Connections Unit 4 Module 4 Session 5 Answer Key
Using Tens to Count, Add & Subtract
Each square represents 1 inch.
Question 1.
Figure out how many inches tall each penguin is. Write the number of inches on the line beside each penguin’s name.
Answer:
Number of inches on the line beside each penguin’s name:
Height of Gentoo penguin is 30 inches.
Height of Emperor penguin is 45 inches.
Height of King penguin is 36 inches.
Height of Chinstrap penguin is 29 inches.
Height of Rockhopper penguin is 18 inches.
Height of little blue penguin is 16 inches.
Explanation:
Height of Gentoo = 30 inches.
Height of Emperor = 45 inches.
Height of King = 36 inches.
Height of Chinstrap = 29 inches.
Height of Rockhopper = 18 inches.
Height of little blue = 16 inches.
Question 2.
How much taller is the emperor penguin than the gentoo penguin? Show how you figured it out.
Answer:
15 inches taller is the emperor penguin than the gentoo penguin.
Explanation:
Height of Emperor = 45 inches.
Height of Gentoo = 30 inches.
Difference:
Height of Emperor – Height of Gentoo
= 45 inches – 30 inches
= 15 inches.
Question 3.
CHALLENGE How much taller are you than the gentoo penguin? Show how you figured it out.
Answer:
135 inches taller I am than the gentoo penguin.
Explanation:
Height of Gentoo = 30 inches.
Height of Me = 165 inches.
Difference:
Height of Me – Height of Gentoo
= 165 inches – 30 inches
= 135 inches.
Use the Hundreds Grid to help you find the sums and differences below:
Question 4.
Add.
63 + 10 = ___________
17 + 10 = ___________
36 + 10 = ___________
10 + 25 = ___________
74 + 10 = ___________
10 + 38 = ___________
Answer:
Addition:
63 + 10 = 73.
17 + 10 = 27.
36 + 10 = 46.
10 + 25 = 35.
74 + 10 = 84.
10 + 38 = 48.
Explanation:
Given Equations:
63 + 10 = 73.
17 + 10 = 27.
36 + 10 = 46.
10 + 25 = 35.
74 + 10 = 84.
10 + 38 = 48.
Question 5.
Subtract.
41 – 10 = ___________
85 – 10 = ____________
25 – 10 = ____________
97 – 10 = ____________
52 – 10 = ____________
31 – 10 = ____________
Answer:
Subtraction:
41 – 10 = 31.
85 – 10 = 75.
25 – 10 = 15.
97 – 10 = 87.
52 – 10 = 42.
31 – 10 = 21.
Explanation:
Given equations:
41 – 10 = 31.
85 – 10 = 75.
25 – 10 = 15.
97 – 10 = 87.
52 – 10 = 42.
31 – 10 = 21.