Examples with solutions for Addition and subtraction: 3 Numbers

Exercise #1

9+3−1= 9+3-1=

Video Solution

Step-by-Step Solution

According to the rules of the order of arithmetic operations, we will work to solve the exercise from left to right:

9+3=11

11-1=10

 

And this is the solution!

Answer

11 11

Exercise #2

3+2−1= 3+2-1=

Video Solution

Step-by-Step Solution

According to the rules of the order of operations, given that the exercise only involves subtraction and addition operations, we solve the exercise from left to right:

3+2=5 3+2=5

5−1=4 5-1=4

Answer

4 4

Exercise #3

6+5−8= ? 6+5-8=\text{ ?}

Video Solution

Step-by-Step Solution

Add first: 6+5=11 6 + 5 = 11 .

Then, subtract: 11−8=3 11 - 8 = 3 .

The correct answer is 3 3 .

Answer

3 3

Exercise #4

5+9−3= ? 5+9-3=\text{ ?}

Video Solution

Step-by-Step Solution

First, add 5 and 9 to get 14.

5+9=145 + 9 = 14

Then, subtract 3 from 14 to get 11.

14−3=1114 - 3 = 11

Answer

1111

Exercise #5

7+5−2= ? 7+5-2=\text{ ?}

Video Solution

Step-by-Step Solution

First, add 7 and 5 to get 12.

7+5=127 + 5 = 12

Then, subtract 2 from 12 to get 10.

12−2=1012 - 2 = 10

Answer

1010

Exercise #6

15−4+3= ? 15-4+3=\text{ ?}

Video Solution

Step-by-Step Solution

First, subtract 4 from 15 to get 11.

15−4=1115 - 4 = 11

Then, add 3 to 11 to get 14.

11+3=1411 + 3 = 14

Answer

14 14

Exercise #7

8−6+4= ? 8-6+4=\text{ ?}

Video Solution

Step-by-Step Solution

First, subtract 6 from 8 to get 2.

8−6=28 - 6 = 2

Then, add 4 to 2 to get 6.

2+4=62 + 4 = 6

Answer

66

Exercise #8

12−5−2=12 - 5 - 2 =

Video Solution

Step-by-Step Solution

First, subtract the second number from the first:

12−5=712 - 5 = 7

Then, subtract the third number from the result:

7−2=57 - 2 = 5

So, 12−5−2=512 - 5 - 2 = 5

Answer

5 5

Exercise #9

7+2−4= ? 7+2-4=\text{ ?}

Video Solution

Step-by-Step Solution

First, we perform the addition: 7+2=9 7 + 2 = 9 .

Next, we do the subtraction: 9−4=5 9 - 4 = 5 .

Hence, the answer is 5 5 .

Answer

5 5

Exercise #10

4+8−5= 4 + 8 - 5 =

Video Solution

Step-by-Step Solution

Perform the addition operation first:

4+8=12 4 + 8 = 12

Then subtract 5 from the result:

12−5=7 12 - 5 = 7

Therefore, the correct answer is:

7

Answer

7

Exercise #11

8−2+6= 8 - 2 + 6 =

Video Solution

Step-by-Step Solution

Solve the additions and subtractions from left to right:

8−2=6 8 - 2 = 6

Then add 6:

6+6=12 6 + 6 = 12

Answer

12

Exercise #12

10+1−7= ? 10+1-7=\text{ ?}

Video Solution

Step-by-Step Solution

Start by adding: 10+1=11 10 + 1 = 11 .

Finally, subtract: 11−7=4 11 - 7 = 4 .

The solution is 4 4 .

Answer

4 4

Exercise #13

10−3−1=10 - 3 - 1 =

Video Solution

Step-by-Step Solution

Start with the initial expression: 10−3−110 - 3 - 1.

First, subtract 3 from 10: 10−3=710 - 3 = 7.

Next, subtract 1 from the result: 7−1=67 - 1 = 6.

Therefore, the final answer is 66.

Answer

6 6

Exercise #14

Solve:

10+5−3 = 10+5-3\text{ }=

Video Solution

Step-by-Step Solution

To solve 10+5−3 10+5-3 follow these steps:

1. 10+5=15 10 + 5 = 15

2. 15−3=12 15 - 3 = 12

So the answer is 12 12 .

Answer

12

Exercise #15

15−4−3=15 - 4 - 3 =

Video Solution

Step-by-Step Solution

To solve 15−4−315 - 4 - 3, follow these steps:

  1. First, subtract 4 from 15: 15−4=1115 - 4 = 11.

  2. Next, subtract 3 from the result: 11−3=811 - 3 = 8.

  3. Therefore, the correct answer is 8 8 .

Answer

8 8

Exercise #16

Solve:

15+8−6 = 15+8-6\text{ }=

Video Solution

Step-by-Step Solution

To solve 15+8−6 15+8-6 follow these steps:

1. 15+8=23 15 + 8 = 23 .

2. 23−6=17 23 - 6 = 17 .

So the answer is 17 17 .

Answer

17

Exercise #17

5+3+2= ? 5+3+2=\text{ ?}

Video Solution

Step-by-Step Solution

To solve 5+3+25 + 3 + 2, you follow these steps:

First, add the first two numbers: 5+3=85 + 3 = 8.

Then, add the result to the last number: 8+2=108 + 2 = 10.

Therefore, the final result is 1010.

Answer

1010

Exercise #18

7−2+6= ? 7-2+6=\text{ ?}

Video Solution

Step-by-Step Solution

To solve 7−2+67 - 2 + 6:

  1. Begin with the subtraction: 7−2=57 - 2 = 5
  2. Then add the result to 6: 5+6=115 + 6 = 11
  3. Thus, the correct answer is 1111.

Answer

11 11

Exercise #19

Solve:

8+6−4 = 8+6-4\text{ }=

Video Solution

Step-by-Step Solution

To solve 8+6−4 8+6-4 follow these steps:

1. 8+6=14 8 + 6 = 14

2. 14−4=10 14 - 4 = 10

So the answer is 10 10 .

Answer

10

Exercise #20

9+3−5= ? 9+3-5=\text{ ?}

Video Solution

Step-by-Step Solution

To solve 9+3−59 + 3 - 5:

  1. Start with the addition: 9+3=129 + 3 = 12
  2. Then perform the subtraction: 12−5=712 - 5 = 7
  3. Therefore, the final answer is 77.

Answer

7 7