What is 1/8 plus 5/8?
1/8 plus 5/8 equals 3/4 (or 0.75 in decimal form). Learn the step-by-step solution to add 1/8 and 5/8 using Least Common Denominator and simplification.
Exact Answer
1/8 + 5/8 = 3/4
Simplified Fraction
3/4
Mixed Number
Proper (3/4)
Decimal Value
0.75
Percentage
75%
Step-by-Step Solution: 1/8 + 5/8
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 + 5/8
Step 2
Add the Numerators
Now add the numerators (1 + 5 = 6) and keep the common denominator 8 unchanged.
1 + 5/8 = 6/8
Step 3
Simplify the Fraction to Lowest Terms
Find the Greatest Common Divisor (GCD) of 6 and 8, which is 2. Divide both the numerator and denominator by 2.
6 ÷ 2/8 ÷ 2 = 3/4
Step 4
Decimal & Percentage Representation
Dividing the numerator 3 by denominator 4 yields an exact terminating decimal of 0.75 (or 75%).
3 ÷ 4 = 0.75 (75%)
Visual Representation
The diagram below illustrates 1/8 plus 5/8 visually:
+
=
Summary & Alternative Representations
| Property / Format | Value |
|---|---|
| Lowest Terms Fraction | 3/4 |
| Mixed Number Form | 3/4 |
| Decimal Form | 0.75 |
| Percentage | 75% |
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Frequently Asked Questions
What is 1/8 plus 5/8 as a fraction?
1/8 + 5/8 in simplest fraction form is 3/4.
What is 1/8 plus 5/8 as a decimal?
1/8 + 5/8 converted to a decimal is 0.75.
What is 1/8 plus 5/8 as a percentage?
1/8 + 5/8 expressed as a percentage is 75%.
Does 1/8 plus 5/8 result in a terminating or repeating decimal?
It results in an exact terminating decimal (0.75) because the denominator in simplest terms contains only prime factors 2 and/or 5.