Worksheet on Addition and Subtraction using Number Line helps little ones who wanted to practice adding and subtracting on a number line. Kids can learn how to add and subtract 2 numbers using a number line by referring to the various problems. 6th Grade Math Addition and Subtraction using Number Line Worksheet will help you solve simple addition, subtraction problems by applying counting skills and build basics in you. Download the PDF Format of Adding and Subtracting on a Number Line Worksheet over here and solve the questions for free.
Do read:
- Worksheet on Integers and the Number Line
- Addition on a Number Line
- Expressing Numbers on the Number Line
Adding and Subtracting on a Number Line Worksheet
I. Evaluate the following using a number line:
(i) (+4) + (+5)
(ii) 0 + (+7)
(iii) (+8) + (+4)
(iv) (+3) + (2)
(v) (+9) + (+2)
Solution:
(i)
The first step is to locate the first number which is +4 on the number line.
To add +5 means we have to move to the +5 units to the right.
By doing so, we end up at +9.
Therefore, the sum is +9.
(ii) 
The first step is to locate the first number which is 0 on the number line.
To add +7 means we have to move to the +7 units to the right.
By doing so, we end up at +7.
Therefore, the sum is +7.
(iii) 
The first step is to locate the first number which is +8 on the number line.
To add +4 means we have to move to the +4 units to the right.
By doing so, we end up at +12.
Therefore, the sum is +12.
(iv) 
The first step is to locate the first number which is +3 on the number line.
To add +2 means we have to move to the +2 units to the right.
By doing so, we end up at +5.
Therefore, the sum is+5.
(v) 
The first step is to locate the first number which is +9 on the number line.
To add +2 means we have to move to the +2 units to the right.
By doing so, we end up at +11.
Therefore, the sum is +11.
II. Use a number line to evaluate each of the following:
(i) (-1) + (+5)
(ii) 0 + (+2)
(iii) (-3) + (+6)
(iv) (-4) + (+3)
(V) +3 + 5
(Vi) +9 – 6
Solution:
(i) 
Locate the first point -1 on the number line.
To add +5 means, we have to move 5 points to the right of the number line. The result is +4.
(ii) 
Locate the first point 0 on the number line.
To add +2 means, we have to move 2 points to the right of the number line. The result is +2.
(iii) 
Locate the first point -3 on the number line.
To add +6 means, we have to move 6 points to the right of the number line. The result is +3.
(iv) 
Locate the first point -4 on the number line.
To add +3 means, we have to move 3 points to the right of the number line. The result is-1.
(v) 
Locate the first point +3 on the number line.
To add +5 means, we have to move 5 points to the right of the number line. The result is+8.
(vi) 
Locate the first point +9 on the number line.
To add -6 means, we have to move 6 points to the right of the number line. The result is+3.
III. Solve the given:
(i) +15 – 3
(ii) +20 – 10
(iii) -18 + 5
(iv) +4 + 5
(v) -16 + 4
Solution:
(i) 
Locate the first point +15 on the number line.
To add -3 means, we have to move 3 points to the left of the number line.
The result is+12.
(ii) 
Locate the first point +20 on the number line.
To add -10 means, we have to move 10 points to the left of the number line.
The result is+10.
(iii) 
Locate the first point -18 on the number line.
To add 5 means, we have to move 5 points to the right of the number line.
The result is -13.
(iv) 
Locate the first point +4 on the number line.
To add +5 means, we have to move 5 points to the right of the number line.
The result is +9.
(v) 
Locate the first point -16 on the number line.
To add +4 means, we have to move 4 points to the right of the number line.
The result is -12.
IV. Add the following using number line:
(i) (+5) + (-2)
(ii) (+7) + (-2)
(iii) (+6) + (-9)
(iv) 0 + (-4)
(v) (-2) +(-7)
Solution:
(i) 
Locate the first point +5 on the number line.
To add -2 means, we have to move 2 points to the left of the number line.
The result is +3.
(ii) 
Locate the first point +7 on the number line.
To add -2 means, we have to move 2 points to the left of the number line.
The result is +5.
(iii) 
Locate the first point +6 on the number line.
To add -9 means, we have to move 9 points to the left of the number line.
The result is-3.
(iv) 
Locate the first point 0 on the number line.
To add -4 means, we have to move 4 points to the left of the number line.
The result is-4.
(v) 
Locate the first point -2 on the number line.
To add -7 means, we have to move 7 points to the left of the number line.
The result is -9.
V. Subtract the following using number line:
(i) (+12) – (+4)
(ii) (+8) – (+2)
(iii) (+7) – (-3)
(iv) (+5) – (-6)
(v) (+9) – (-5)
Solution:
(i) 
After changing the operation from subtraction to addition, we must take the opposite sign of the number following it.
i.e. (+12) +(-4)
Locate the first number +12 on the number line and move to the 4 units left.
The result is +8.
(ii) 
After changing the operation from subtraction to addition, we must take the opposite sign of the number following it.
i.e. (+8) +(-2)
Locate the first number +8 on the number line and move to the 2 units left.
The result is +6
(iii) 
After changing the operation from subtraction to addition, we must take the opposite sign of the number following it.
i.e. (+7) +(3)
Locate the first number +7 on the number line and move to the 3 units right.
The result is +10
(iv) 
After changing the operation from subtraction to addition, we must take the opposite sign of the number following it.
i.e. (+5) +(+6)
Locate the first number +5 on the number line and move to the 6 units right.
The result is +11.
(v)
After changing the operation from subtraction to addition, we must take the opposite sign of the number following it.
i.e. (+9) +(+5)
Locate the first number +9 on the number line and move to the 5 units right.
The result is +14.
VI. Subtract the following:
(i) +10 from +8
(ii) -7 from +3
(iii) +17 from -15
Solution:
(i) 
Given +8-(+10)
After changing the operation from subtraction to addition, we must take the opposite sign of the number following it.
i.e. (+8) +(-10)
Locate the first number +8 on the number line and move to the 10 units left.
The result is-2.
(ii)
Given +3-(-7)
After changing the operation from subtraction to addition, we must take the opposite sign of the number following it.
i.e. (+3) +(+7)
Locate the first number +3 on the number line and move to the 7 units right.
The result is+10
(iii) 
Given -15-(+5)
After changing the operation from subtraction to addition, we must take the opposite sign of the number following it.
i.e. (-15) +(-5)
Locate the first number -15 on the number line and move to the 5 units left.
The result is -20.
VII. Fill in the blanks:
(i) -10 + ……… = 0
(ii) 25 + ……… = 0
(iii) 32 – 32 = ………
(iv) -4 + ……… = -1
(v) ……… – 4 = 6
(vi) The successor of -6 is ………
(vii) The predecessor of -4 is ………
Solution:
(i) 10
(ii) -25
(iii) 0
(iv) +3
(v) 10
(vi) -5
(vii) -5