What is 2/5 plus 2/5?
2/5 plus 2/5 equals 4/5 (or 0.8 in decimal form). Learn the step-by-step solution to add 2/5 and 2/5 using Least Common Denominator and simplification.
Exact Answer
2/5 + 2/5 = 4/5
Simplified Fraction
4/5
Mixed Number
Proper (4/5)
Decimal Value
0.8
Percentage
80%
Step-by-Step Solution: 2/5 + 2/5
Step 1
Check the Denominators (Like Fractions)
Both fractions already share the identical denominator (5). Because these are like fractions, no conversion to a common denominator is required—we directly add their numerators while keeping the denominator 5.
2/5 + 2/5
Step 2
Add the Numerators
Now add the numerators (2 + 2 = 4) and keep the common denominator 5 unchanged.
2 + 2/5 = 4/5
Step 3
Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 4 and 5 is 1, confirming that 4/5 cannot be reduced further—it is already in its simplest irreducible form.
4/5
Step 4
Decimal & Percentage Representation
Dividing the numerator 4 by denominator 5 yields an exact terminating decimal of 0.8 (or 80%).
4 ÷ 5 = 0.8 (80%)
Visual Representation
The diagram below illustrates 2/5 plus 2/5 visually:
+
=
Summary & Alternative Representations
| Property / Format | Value |
|---|---|
| Lowest Terms Fraction | 4/5 |
| Mixed Number Form | 4/5 |
| Decimal Form | 0.8 |
| Percentage | 80% |
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Frequently Asked Questions
What is 2/5 plus 2/5 as a fraction?
2/5 + 2/5 in simplest fraction form is 4/5.
What is 2/5 plus 2/5 as a decimal?
2/5 + 2/5 converted to a decimal is 0.8.
What is 2/5 plus 2/5 as a percentage?
2/5 + 2/5 expressed as a percentage is 80%.
Does 2/5 plus 2/5 result in a terminating or repeating decimal?
It results in an exact terminating decimal (0.8) because the denominator in simplest terms contains only prime factors 2 and/or 5.