fractions grade4

1. Fractions With Like
Denominators

2. Terminology
Like decimals, fractions represent parts of numbers. A
fraction is usually a number that is between 0 and 1.
Numerator - number on top
Denominator - number on bottom

3. To add or subtract fractions
with like denominators:
• If the denominators are already the same,
then you’re ready to add or subtract.
• Add or subtract the numerators. Keep the
denominators the same.
• Simplify (reduce) the fraction, if possible.
• If you end up with an improper fraction,
change it to a mixed number.

4. Examples
1
5
+
2
5
=
3
5
This answer cannot be
reduced any further.

5. 9
14
5
14 =
4
14
The GCF of 4 and 14 is 2, so we divide by 2 to
reduce.
÷ 2 = 2
7

6. 8
9
+
3
9 =
11
9
This is an improper fraction (the top is bigger than the
bottom), so we want to change it to a mixed number.
To do this, divide the bottom into the top.
9 11
1
9
2
Answer:
12
9

7. Try Some
7
12
5
12 =
4
7
+ 1
7
=
8
15
+
12
15 =
1
6
5
7
1 1
3

8. Homework Time!