How to add fractions - SSAT Middle Level Quantitative

When we add fractions, we have to have common denominators and we only add the numerators.

When we add fractions, we have to have common denominators and we only add the numerators.

When we add fractions, we have to have common denominators and we only add the numerators.

When we add fractions, we have to have common denominators and we only add the numerators.

When we add fractions, we have to have common denominators and we only add the numerators.

When we add fractions, we have to have common denominators and we only add the numerators.

When we add fractions, we have to have common denominators and we only add the numerators.

When we add fractions, we have to have common denominators and we only add the numerators.

When we add mixed numbers, we add whole numbers to whole numbers and fractions to fractions.

Remember, when we are adding fractions we must have common denominators and we only add the numerators.

I think the easiest way to do this problem is to make a common denominator. 4 is the smallest common denominator.

is equivalent to .

When you add and you get .

reduces to and is equivalent to .

First, we need to find a common denominator. In this case, we can convert both denominators to .

Now we can add the numerators.

Both the numerator and denominator are divisible by , so we can simplify.

Add the fractions by writing each with the lowest common denominator, which is .

Add the integers:

Now add the two sums:

The sum of two numbers of unlike sign is the difference of their absolute values, with the sign of the "dominant" number (the positive number here) affixed:

Subtract vertically by aligning the decimal points, making sure you append the 3.2 with a placeholder zero:

This is the correct choice.

When adding fractions, both denominators must be the same. A quick and easy way to do this is to multiply the numerator and the denominator of each fraction by the other fraction's denominator:

and

The is multiplied by 6 on both ends because the denominator of is 6. Likewise, is multiplied by 3 on both ends because the denominator of is 3. The problem should now look like this:

Remember to reduce. 15 and 18 are both divisible by 3.

Your answer is .

Add the numerators:

Rewrite these numbers as improper fractions.

Now evaluate:

, so

The least common multiple of 2 and 9 is 18.

Rewrite using the lowest comon denominator. Since :

Rewrite using the lowest comon denominator. Since :