What Is the Plus Sign Definition Rules and Examples
The plus sign (+) is a common symbol seen in maths, language, and even daily life. On this page, you will learn the meaning of the plus sign, how to use it in sentences, its synonyms, and typical mistakes to avoid. This student-friendly guide is perfect for anyone in Class 6–12 who wants clear explanations and real-life examples.
What Plus Sign Means in English
Definition: The plus sign (+) is a symbol used mainly to show addition or a positive value in maths and English. It joins quantities, ideas, or groups. In English writing, it can mean “and” or “in addition to.” It is a symbol, not a word, and used in both formal and informal contexts.
How to Use Plus Sign in Sentences
You can use the plus sign in maths and sometimes in lists or notes. Here are a few examples:
- Maths: 8 + 2 = 10.
- Lists: Bring pens + notebook + eraser.
- Describing: The team had skill + determination.
- Emoji: The plus sign emoji ➕ means add or positive.
Do not use it in formal essays unless writing equations or formulas.
Common Mistakes and Quick Fix
- Writing “and” as “+” in formal writing is not correct. Use words in essays.
- Confusing plus sign (+) with minus sign (−). Remember, plus means to add.
- Using ++ for more addition is wrong. Use a single “+”.
Explore more English meanings and examples
The plus sign (+) is a versatile symbol representing addition, positivity, or an extra idea in different situations. After reading this page, you can confidently use the plus sign correctly in classwork, presentations, and writing. Practice using it as shown here, and remember—Vedantu has many more resources to make learning symbols and grammar easy for you.
FAQs on Plus Sign in Math Definition and Examples
1. What is a plus sign?
A plus sign (+) is a symbol used in mathematics, writing, and other fields to show addition, combination, or positivity. In math, it indicates that numbers should be added (e.g., 3 + 2 = 5). In general writing, it can mean “and” or “in addition to,” especially in informal contexts like “adults 18+.”
2. What does the plus sign mean in math?
In mathematics, the plus sign (+) means addition or a positive value. It is used to combine numbers or quantities.
- Example of addition: 4 + 6 = 10
- Example of positive number: +7 means positive seven
3. How do you use the plus sign in a sentence?
The plus sign is used in a sentence mainly in mathematical expressions or informal writing to mean “and” or “more.”
- Math example: The total is 8 + 5.
- Informal example: The course is for ages 16+.
4. What is the difference between plus and minus signs?
The plus sign (+) shows addition or a positive value, while the minus sign (−) shows subtraction or a negative value.
- Plus example: 9 + 3 = 12
- Minus example: 9 − 3 = 6
5. What is the function of the plus sign in grammar or writing?
In grammar and writing, the plus sign (+) functions as an informal symbol meaning “and” or “in addition.”
- Example: Buy one ticket + get one free.
- Example: Students 12+ can participate.
6. Can the plus sign mean “and”?
Yes, the plus sign (+) can mean “and” in informal contexts such as advertisements, notes, or headlines. For example:
- Coffee + cake for $5
- Science + Technology Conference
7. What does 18+ mean?
The expression 18+ means “18 years old and above.” The plus sign indicates “or more” in this context.
- 18+ movie = suitable only for people aged 18 or older
- 21+ event = restricted to people 21 and over
8. How do you type the plus sign on a keyboard?
You type the plus sign (+) by pressing the Shift key and the = key on most standard keyboards.
- Windows and Mac: Shift + =
- Numeric keypad: Press the + key directly
9. What is the origin of the plus sign?
The plus sign (+) originated from the Latin word “et”, meaning “and.” Over time, the handwritten “et” symbol was simplified into the cross-like + sign. It was widely adopted in mathematics during the 15th and 16th centuries to represent addition.
10. What are common mistakes when using the plus sign?
Common mistakes with the plus sign include using it in formal writing and confusing it with other symbols.
- Using + instead of “and” in academic essays
- Confusing + with the minus sign (−)
- Forgetting spacing in math expressions (e.g., 5 + 3)
