Math Riddles: 5 algebraic expressions with answers

• Algebra represents numbers as letters (unknown quantities).
• Algebra allows us to define rules and formulas using variables, constants, etc.
• Algebra helps solve puzzles, logic problems, math riddles, and brain teasers.

Algebra arithmetic problems assist students study for Class 8’s Important Topic, Algebraic Expressions and Identities. Students can build problem-solving abilities using Jagran Josh’s Math Riddles with Answers. Below are NCERT solutions for each puzzle, which contain algebraic equations and identities class 8 worksheet answers. Students can initially complete each task in under two minutes.

What are Expressions?
Algebra represents numbers as letters (unknown quantities). Algebra helps us locate unknowns by allowing us to define rules and formulas using variables, constants, etc. Algebra helps solve puzzles, logic problems, math riddles, and brain teasers. Because the letters represent unknown numbers, you can perform mathematical operations on them, which leads to Algebraic Expressions and Identity.

Example Algebraic Expressions: x+3, 4xy+7, 2y-5, etc.

Algebraic Expressions employ variables and constants. 7 is the constant in the expression 4xy + 7. Expression value depends on variable values. As y changes, 2y – 5 evolves. When y = 2, 2y – 5 = 2(2) – 5 = –1, etc.

Variables, Expressions, Coefficients

3xy – 4x is another example with two terms. 3xy is 3x + y. A term’s numerical factor or coefficient. 3xy is 3, but 4x is 4.

Polynomials, monomials, binomials
Monomials are single-term expressions.

Binomials are 2-term expressions.

Trinomials are 3-term expressions.

Polynomials are expressions with non-zero coefficients (with variables having non-negative exponents). Polynomials have one or more words.

What are algebraic identities?
Algebraic Expressions have three key identities. These identities are obtained by multiplying binomials.

What are algebraic identities?

Let’s solve some expressions and identities problems.

Math Riddles: 5 Challenging Puzzles for Class 8 Algebraic Expressions

Maths Puzzle #1

Maths Puzzle #2

Maths Puzzle #3

Maths Puzzle #4

Maths Puzzle #5

Below is the Solutions:

Maths Puzzle #1
Answer:

Explanation:

Maths Puzzle #2
Answer: -10

Explanation:

Maths Puzzle #3
Answer: See Explanation Below

Explanation:

Maths Puzzle #4
Answer: See Explanation Below

Explanation:

Maths Puzzle #5
Answer: 99.26

Explanation:

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