All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 2 Lesson 7 Compare Groups will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 1 Answer Key Chapter 2 Lesson 7 Compare Groups
Explore and Explain
Answer:
Explanation:
I placed the cubes on the monkeys and birds
I counted and wrote the number of monkeys and the number of birds.
Teacher Directions: Look at the picture. Place 
on each bird. Place 
on each monkey. Count and write how many of each animal. Circle the number that shows more.
See and Show
You can subtract to compare groups.
There are 6 zebras. There are 2 elephants. How many more zebras are there than elephants?
Answer:
Explanation:
There are 6 zebras
There are 2 elephants
I drew counters to show the numbers
6 – 2 = 4
4 more zebras and 4 fewer elephants.
Use 
. Write a subtraction number sentence. Write how many more or fewer.
Question 1.
There are 7 giraffes. There are 2 rhinos. How many more giraffes are there than rhinos?
____ – ____ = ____ more giraffes
Answer:
Explanation:
There are 7 giraffes
There are 2 rhinos
I drew counters to show the numbers
I marked X on 2 circles
7 – 2 = 5
So, there are 5 more giraffes.
Talk Math What happens when you compare equal groups?
Answer: The difference will be “0” when you compare equal groups.
On My Own
Use 
. Write a subtraction number sentence Write how many more or fewer.
Question 2.
There are 5 leopards. There are 3 gorillas. How many fewer gorillas are there than leopards?
____ – ____ = ____ fewer gorillas
Answer:
Explanation:
There are 5 leopards
There are 3 gorillas
I drew counters to show the numbers
I marked X on 3 circles
5 – 3 = 2
So, there are 2 fewer gorillas.
Question 3.
9 butterflies are black. 5 butterflies are yellow. How many fewer butterflies are yellow than black?
____ – ____ = ____ fewer butterflies
Answer:
Explanation:
9 butterflies are black
5 butterflies are yellow
I drew counters to show the numbers
I marked X on 5 circles
9 – 5 = 4
There are 4 fewer yellow butterflies than black butterflies.
Question 4.
There are 6 tigers. There are 2 cheetahs. How many more tigers are there than cheetahs?
_____ – ____ = ____ more tigers
Answer:
Explanation:
There are 6 tigers
There are 2 cheetahs
I drew counters to show the numbers
I marked X on 2 circles
6 – 2 = 4
There are 4 more tigers.
Problem Solving
Question 5.
There are 8 elephants. There are 4 lions. How many fewer lions are there than elephants?
____ fewer lions
Answer:
Explanation:
There are 8 elephants
There are 4 lions
I drew counters to show the numbers
I marked X on 4 circles
8 – 4 = 4
So, there are 4 fewer lions.
Question 6.
There are 9 monkeys and 8 parrots in a tree. How many more monkeys are there than parrots?
____ more monkey
Answer:
Explanation:
There are 9 monkeys and 8 parrots in a tree
I drew counters to show the numbers
I marked X on 8 circles
9 – 8 = 1
So, there is 1 more monkey.
Write Math How can you use subtraction to compare groups?
_________________________
_________________________
_________________________
_________________________
Answer:
If we subtract two different groups we can compare them to find which group has more and which has fewer.
McGraw Hill My Math Grade 1 Chapter 2 Lesson 7 My Homework Answer Key
Practice
Write a subtraction number sentence. Write how many more or fewer.
Question 1.
There are 4 snakes. There are 2 chimps. How many fewer chimps are there than snakes?
____ – ____ = ____ fewer chimps
Answer:
Explanation:
There are 4 snakes
There are 2 chimps
I drew counters to show the numbers
I marked X on 2 circles
4 – 2 = 2
So, there are 2 fewer chimps.
Question 2.
Stella ate 3 bananas. Seth ate 2 bananas. How many fewer bananas did Seth eat than Stella?
____ – ____ = ____ fewer banana
Answer:
Explanation:
Stella ate 3 bananas
Seth ate 2 bananas
I drew counters to show the numbers
I marked X on 2 circles
3 – 2 = 1
So, there is 1 fewer banana.
Write a subtraction number sentence. Write how many more or fewer.
Question 3.
There are 5 frogs in a pond and 3 frogs on the land. How many more frogs are in a pond than on the land?
_____ – _____ = ____ more frogs
Answer:
Explanation:
There are 5 frogs in a pond and 3 frogs on the land
I drew counters to show the numbers
I marked X on 3 circles.
5 – 3 = 2
So, there are 2 more frogs.
Question 4.
Jesse went fishing. He caught 7 fish in the morning and 6 fish in the afternoon. How many fewer fish did Jesse catch in the afternoon than in the morning?
____ – ____ = ____ fewer fish
Answer:
Explanation:
Jesse went fishing
He caught 7 fish in the morning and 6 fish in the afternoon
I drew counters to show the numbers
I marked X on 6 circles
7 – 6 = 1
So, there is 1 fewer fish.
Vocabulary Check
Circle the correct answer.
compare add
Question 5.
Subtract two different groups so you can ____ them to find which group has more and which has fewer.
Answer:
Subtract two different groups so you can compare them to find which group has more and which has fewer.
Math at Home Take a walk outside. Collect leaves or other objects found in nature. Create two groups with the items showing less than 9 items in each group. Have your child tell how many more or how many fewer.