All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 2 Check My Progress will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 1 Chapter 2 Check My Progress Answer Key
Check My Progress Page No. 139-140
Vocabulary Check
Draw lines to match.
Answer:
Explanation:
I drew lines lines to match the words with their meaning.
Concept Check
Tell a number story. Write how many are left.
Question 5.
How many hippos are left in the water?
____ hippos
Answer:
5 hippos
Explanation:
There are 7 hippos in the water
2 hippos left the water
Subtract 2 from 7
7 – 2 = 5
So, 5 hippos are left.
Write a subtraction number sentence.
Question 6.
Answer:
Explanation:
There are 5 giraffes
1 is taken out
4 are left
So, 5 – 1 = 4.
Subtract.
Question 7.
Answer:
Explanation:
The difference of 9 and 3 is 6
So, 9 – 3 = 6.
Question 8.
7 – 2 = ____
Answer:
5
Explanation:
The difference of 7 an d2 is 5
So, 7 – 5 = 2
Question 9.
There are 5 monkeys on a tree. 0 monkeys get out of the tree. How many monkeys are left on the tree?
____ monkeys
Answer:
5 monkeys
Explanation:
There are 5 monkeys on a tree
0 monkeys get out of the tree
5 – 0 = 5
So, there are 5 monkeys left on the tree.
Test Practice
Question 10.
There are 9 owls. 3 owls fly away. How many owls are left?
(A) 6 owls
(B) 11 owls
(C) 7 owls
(D) 12 owls
Answer:
(A) 6 owls
Explanation:
There are 9 owls
3 owls fly away
Subtract 3 from 9
9 – 3 = 6
So, 6 owls are left.
Check My Progress Page No. 165 – 166
Circle the correct answer.
difference compare
Question 1.
The words more and fewer can be used to ____ the number of objects in two different groups.
Answer:
The words more and fewer can be used to compare the number of objects in two different groups.
Concept Check
Write a subtraction number sentence.
Question 2.
Answer:
Explanation:
There are 5 rhinos
3 are taken off
Subtract 3 from 5
5 – 3 = 2
So, 2 rhinos are left.
Question 3.
Answer:
Explanation:
There are 4 giraffes
3 are taken off
Subtract 3 from 4
4 – 3 = 1
So, 1 giraffe is left.
Subtract.
Question 4.
Answer:
Explanation:
The difference of 6 and 4 is 2
6 – 4 = 2.
Question 5.
Answer:
Explanation:
Any number subtracted from the same number is 0
So, The difference of 4 and 4 is 0.
Question 6.
Answer:
Explanation:
The difference of 5 and 1 is 4
5 – 1 = 4.
Subtract.
Question 7.
5 – 4 = ____
Answer:
1
Explanation:
The difference of 5 and 4 is 1
5 – 4 = 1.
Question 8.
6 – 0 = ____
Answer:
6
Explanation:
Any number subtracted by 0 the answer is the number itself
6 – 0 = 6.
Question 9.
6 – 2 = ____
Answer:
4
Explanation:
The difference of 6 and 2 is 4
6 – 2 = 4.
Question 10.
7 – 7 = ____
Answer:
0
Explanation:
The difference of any number from itself is 0
So, 7 – 7 = 0.
Question 11.
7 – 4 = ____
Answer:
7 – 4 = 3
Explanation:
The difference of 7 and 4 is 3
7 – 4 = 3.
Question 12.
4 – 2 = ____
Answer:
2
Explanation:
The difference of 4 and 2 is 2
4 – 2 = 2.
Question 13.
There are 6 beetles. There are 4 butterflies. How many fewer butterflies are there than beetles?
____ – ____ = ____ fewer butterflies
Answer:
6 – 4 = 2 fewer butterflies
Explanation:
There are 6 beetles
There are 4 butterflies
Subtract 4 from 6
6 – 4 = 2
So, there are 2 fewer butterflies than beetles.
Test Practice
Question 14.
Rachel sees 7 caterpillars on a leaf. 5 of them crawl away. How many caterpillars are on the leaf now?
(A) 12 caterpillars
(B) 3 caterpillars
(C) 11 caterpillars
(D) 2 caterpillars
Answer:
(D) 2 caterpillars
Explanation:
Rachel sees 7 caterpillars on a leaf
5 of them crawl away
Subtract 5 from 7
7 – 5 = 2
So, 2 caterpillars are on the leaf now.