Refer to our Texas Go Math Grade 1 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 1 Lesson 7.2 Answer Key Think Addition to Subtract.
Texas Go Math Grade 1 Lesson 7.2 Answer Key Think Addition to Subtract
Essential Question
How can you use an addition fact to find the answer to a subtraction fact?
Explanation:
The basic facts of addition are those equations in which two single-digit numbers are combined by addition to give a sum Hence they range from 0+0=0 to 9+9=18. For each basic addition fact there is a related basic subtraction fact, for example, 18-9=9.
Explore
Use 
to model the problem.
Draw to show your work.
What is 12 – 5 ?
5 + ___ = 12
12 – 5 = ___
For The Teacher
- Read the following problems. Joey had 5 cubes. Sarah gave him more cubes Now Joey has 12 cubes. How many cubes did Sarah give him? Children use the top workspace to solve. Then have children solve this problem: Joey had 12 cubes. He gave Sarah 5 cubes. How many cubes does Joey have flow?
Math Talk
Mathematical Processes
Explain how 5 + 7 = 12 can help you find 12 – 5.
Explanation:
5 + 7 = 12
12 – 5 = 7
This type of equations are called subtraction facts.
Model and Draw
What is 9 – 4?
Explanation:
Share and Show
Use 
to add and to subtract.
Question 1.
What is 8 – 6?
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Question 2.
What is 8 – 4?
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Question 3.
‘What is 10 – 4?
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Question 4.
What is 12 – 6?
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Problem Solving
Use 
to add and to subtract.
Question 5.
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Question 6.
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Question 7.
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Solve.
Question 8.
H.O.T. Carol can use an addition sentence to write a subtraction sentence. Write a subtraction sentence she can solve using 6 + 8 = 14.
Answer:
6 + 8 = 14
14 – 8 = 6
Explanation:
a subtraction sentence she can solve using 6 + 8 = 14.
Question 9.
H.O.T. Multi-Step Write two addition sentences Carol can use to help her solve 13 — 9.
Answer:
Explanation:
Carol used this two addition sentences
9 + 4 = 13
4 + 9 = 13 to solve the subtraction sentence
13 – 9 = 4
Daily Assessment Task
Choose the correct answer.
Question 10.
Analyze Which addition sentence helps you solve the problem? Fritz buys 12 balloons for the party. 5 balloons are red. The rest are green. How many balloons are green?
(A) 2 + 3 = 5
(B) 5 + 7 = 12
(C) 6 + 6 = 12
Answer: B
Explanation:
5 + 7 = 12 helps you solve the problem.
Fritz buys 12 balloons for the party. 5 balloons are red. The rest are green.
12 – 5 = 7
7 balloons are green
Question 11.
Which addition sentence helps you solve the problem?
Ben had 9 toy cars. He gave away 3 toy cars. How many toy cars does Ben have now?
(A) 3 + 6 = 9
(B) 8 + 1 = 9
(C) 9 + 3 = 12
Answer: A
Explanation:
Ben had 9 toy cars. He gave away 3 toy cars.
9 – 3 = 6
6 toy cars that Ben have now
Question 12.
Which subtraction sentence can you solve using 7 + 6 = 13?
(A) 7 – 6 = ____
(B) 13 – 6 = ___
(C) 13 – 8 = ____
Answer: B
Explanation:
13 – 6 = 7 is the subtraction sentence
which is derived from the addition fact.
Question 3.
Texas Test Prep Which addition sentence helps you solve 10 — 7?
(A) 3 + 4 = 7
(B) 5 + 5 = 10
(C) 7 + 3 = 10
Answer: C
Explanation:
7 + 3 = 10 is the addition sentence which is derived
from the subtraction sentence
10 – 7 =3
Take Home Activity
• Write 5 + 4 = __, and ask your child to write the sum Have him or her explain how to use 5 + 4 = 9, to solve, __ – 4 = 5, and then write the answer.
Explanation:
5 + 4 = 9
9 – 4 = 5
Are the facts of addition and subtraction.
Texas Go Math Grade 1 Lesson 7.2 Homework and Practice Answer Key
Complete the addition. Then subtract.
Question 1.
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Question 2.
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Question 3.
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Question 4.
Answer:
Explanation:
used an addition fact to find the answer to a subtraction fact
Problem Solving
Question 5.
Multi-Step Write two addition sentences Claire can use to help solve 14 — 5.
Answer:
Explanation:
The above 2 equations are addition sentences
derived from subtraction sentences.
Texas Test Prep
Lesson Check
Choose the correct answer.
Question 6.
Which addition sentence helps you solve the problem?
There are 11 balls. 6 are footballs. The rest are soccer balls. How many balls are soccer balls?
(A) 4 + 7 = 1
(B) 6 + 5 = 11
(C) 3 + 3 = 6
Answer: B
Explanation:
There are 11 balls. 6 are footballs.
11 – 6 = 5
The rest are soccer balls.
5 balls are soccer balls
Question 7.
Which addition sentence helps you solve the problem?
Bailey had 13 purses. She gave away 5 purses. How many purses does she have now?
(A) 5 + 6 = 11
(B) 9 + 5 = 14
(C) 5 + 8 = 13
Answer: C
Explanation:
Bailey had 13 purses. She gave away 5 purses.
13 – 5 = 8
8 purses that she have now
Question 8.
Which subtraction sentence can you solve using 8 + 6 = 14?
(A) 8 – 6 = 2
(B) 14’ – 6 = 8
(C) 14 – 7 = 7
Answer: B
Explanation:
14’ – 6 = 8 is the subtraction sentence
that can be used to solve by using 8 + 6 = 14
Question 9.
Which addition sentence can you use to solve 13 – 7?
(A) 7 + 6 = 13
(B) 7 + 4 = 11
(C) 5 + 8 = 13
Answer: A
Explanation:
7 + 6 = 13 is the addition sentence that can be used to solve 13 – 7 = 6