What is 1/8 plus 2/8?
1/8 plus 2/8 equals 3/8 (or 0.375 in decimal form). Learn the step-by-step solution to add 1/8 and 2/8 using Least Common Denominator and simplification.
Exact Answer
1/8 + 2/8 = 3/8
Simplified Fraction
3/8
Mixed Number
Proper (3/8)
Decimal Value
0.375
Percentage
37.5%
Step-by-Step Solution: 1/8 + 2/8
Step 1
Check the Denominators (Like Fractions)
Both fractions already share the identical denominator (8). Because these are like fractions, no conversion to a common denominator is required—we directly add their numerators while keeping the denominator 8.
1/8 + 2/8
Step 2
Add the Numerators
Now add the numerators (1 + 2 = 3) and keep the common denominator 8 unchanged.
1 + 2/8 = 3/8
Step 3
Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 3 and 8 is 1, confirming that 3/8 cannot be reduced further—it is already in its simplest irreducible form.
3/8
Step 4
Decimal & Percentage Representation
Dividing the numerator 3 by denominator 8 yields an exact terminating decimal of 0.375 (or 37.5%).
3 ÷ 8 = 0.375 (37.5%)
Visual Representation
The diagram below illustrates 1/8 plus 2/8 visually:
+
=
Summary & Alternative Representations
| Property / Format | Value |
|---|---|
| Lowest Terms Fraction | 3/8 |
| Mixed Number Form | 3/8 |
| Decimal Form | 0.375 |
| Percentage | 37.5% |
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Frequently Asked Questions
What is 1/8 plus 2/8 as a fraction?
1/8 + 2/8 in simplest fraction form is 3/8.
What is 1/8 plus 2/8 as a decimal?
1/8 + 2/8 converted to a decimal is 0.375.
What is 1/8 plus 2/8 as a percentage?
1/8 + 2/8 expressed as a percentage is 37.5%.
Does 1/8 plus 2/8 result in a terminating or repeating decimal?
It results in an exact terminating decimal (0.375) because the denominator in simplest terms contains only prime factors 2 and/or 5.