Practice with the help of Spectrum Math Grade 1 Answer Key Chapter 3 Lesson 3.13 Using Addition for Subtraction regularly and improve your accuracy in solving questions.
Spectrum Math Grade 1 Chapter 3 Lesson 3.13 Using Addition for Subtraction Answers Key
Think addition for subtraction. Solve each problem.
Answer:
When three is subtracted from seventeen it gives the value 14 as shown below.
i.e. 17 -3 = 14
Answer:
Let the unknown number be x
3 + x = 17
x = 17 – 3
x = 14
Therefore 3 +14 is equal to 17.
Answer:
When five 
are subtracted from twenty 
it gives the value 15 as shown below.
i.e. 20 – 5 = 15
Answer:
Let the unknown number be x
5 + x = 20
x = 20 – 5
x = 15
Therefore 5 +15 is equal to 20 .
Answer:
When 5 
are subtracted from Nineteen 
it gives the value 14 as shown below.
i.e. 19 – 5 = 14
Answer:
Let the unknown number be x
5 + x = 19
x = 19 – 5
x = 14
Therefore 5 +14 is equal to 19 .
Answer:
When 1
 is subtracted from Eighteen 
 it gives the value 17 as shown below.
i.e. 18 – 1 = 17 
Answer:
Let the unknown number be x
1 + x = 18
x = 18 – 1
x = 17
Therefore 1 +17 is equal to 18 .
Answer:
When 4 
 are subtracted from Four 
 it gives the value 11 as shown below.
i.e. 15 – 4 = 11
Answer:
Let the unknown number be x
4 + x = 15
x = 15 – 4
x = 11
Therefore 4 +11 is equal to 15.
Answer:
When 2 
are subtracted from Fourteen 
 it gives the value 12 as shown below.
i.e. 14 – 2 = 12
Answer:
Let the unknown number be x
2 + x = 14
x = 14 – 2
x = 12
Therefore 2 +x is equal to 14.
Answer:
When 1 
is subtracted from Sixteen 
 it gives the value 15 as shown below.
i.e. 16 – 1 = 15
Answer:
Let the unknown number be x
1 + x = 16
x = 16 – 1
x = 15
Therefore 1 + 15 is equal to 16.
Answer:
When 6 
are subtracted from Twenty 
 it gives the value 14 as shown below.
i.e. 20Â –Â 6 = 14
Answer:
Let the unknown number be x
6 + x = 20
x = 20 – 6
x = 14
Therefore 6 + 14 is equal to 20.
Answer:
When 0Â Â 
is subtracted from Thirteen 
it gives the value 13 as shown below.
i.e. 13Â –Â 0 = 13
Answer:
Let the unknown number be x
0 + x = 13
x = 13 – 0
x = 13
Therefore 0 + 13 is equal to 13.