Basic Arithmetic : Addition with Whole Numbers

Study concepts, example questions & explanations for Basic Arithmetic

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Example Questions

Example Question #1 : Addition With Whole Numbers

If I had \(\displaystyle \$443\) in the bank and deposited an additonal \(\displaystyle \$96\) today, how much do I have in total?

Possible Answers:

\(\displaystyle \$439\)

\(\displaystyle \$419\)

\(\displaystyle \$519\)

\(\displaystyle \$539\)

Correct answer:

\(\displaystyle \$539\)

Explanation:

1. Add the ones places:

\(\displaystyle 6+3=9\)

2. Add the tens places:

\(\displaystyle 4+9=13\)

***don't forget to put the 3 down and carry the one to the hundreds place***

3. Add the hundreds place:

\(\displaystyle 4+1+5\)

This makes your total:

\(\displaystyle \$539\)

 

Example Question #2 : Operations With Whole Numbers

Find the sum.

\(\displaystyle 19+128= ?\)

Possible Answers:

\(\displaystyle 123\)

\(\displaystyle 125\)

\(\displaystyle 168\)

\(\displaystyle 147\)

Correct answer:

\(\displaystyle 147\)

Explanation:

First add the digits in the ones colume, this would be \(\displaystyle 8+9=17\). Make sure to carry the 1 from the 17 to the tens colume.

Then add the digits in the tens colume, this would be \(\displaystyle 1+2+1=4\).

Lastly, add the digits in the hundrends colume, this would be \(\displaystyle 1\)

Therefore the result is as follows:

Sum

Example Question #2 : Addition With Whole Numbers

\(\displaystyle 5 + 2 =?\)

What is the solution of the above operation?

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 6\)

\(\displaystyle 5\)

\(\displaystyle 2\)

\(\displaystyle 8\)

Correct answer:

\(\displaystyle 7\)

Explanation:

\(\displaystyle 2 + 5 = 7\)

We can see this because if we had 5 (represented by \(\displaystyle x\)) and add another 2 objects (represented by \(\displaystyle y\)) we should get 7 objects (\(\displaystyle x\) and \(\displaystyle y\)) total.

 

 \(\displaystyle (x+x+x+x+x)+(y+y) = (x+x+x+x+x+y+y)\)

We have 7 objects total!

Example Question #5 : Basic Arithmetic

\(\displaystyle 6 + 5 = ?\)

What is the solution of the above equation?

Possible Answers:

\(\displaystyle 1\)

\(\displaystyle 10\)

\(\displaystyle 9\)

\(\displaystyle 13\)

\(\displaystyle 11\)

Correct answer:

\(\displaystyle 11\)

Explanation:

\(\displaystyle 5+6=11\)

If x represents objects.

For 5:

\(\displaystyle 5=(x+x+x+x+x)\)

For 6:

\(\displaystyle 6=(y+y+y+y+y+y)\)

\(\displaystyle (x+x+x+x+x)+(y+y+y+y+y+y)=(y+y+y+y+y+y+x+x+x+x+x)\)

We can see that 11 objects result.

Example Question #11 : Basic Arithmetic

For the following questions, please select the answer that most correctly completes the equation.  

\(\displaystyle 2193 + 435 =\)

Possible Answers:

\(\displaystyle 2638\)

\(\displaystyle 2528\)

\(\displaystyle 2628\)

\(\displaystyle 2538\)

\(\displaystyle 2728\)

Correct answer:

\(\displaystyle 2628\)

Explanation:

\(\displaystyle 2193 +435 = 2628\)

Ones digit: \(\displaystyle 3 + 5 = 8\)

Tens digit: \(\displaystyle 9 + 3 = 12\) (leave the two at the tens, carry the one to the hundreds digit)

Hundreds digit: \(\displaystyle 1 + 4 = 5\), add the one from the tens digit, so you get 5 + 1 = 6

Thousands digit: \(\displaystyle 2 + 0 = 2\)

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