Calculate each value mentally. (242)(0.52)

Ch. R - Review of Basic Concepts

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Lial 13th Edition

Ch. R - Review of Basic Concepts

문제 110

1장, 문제 110

Calculate each value mentally. (24²)(0.5²)

검증된 단계별 안내

Recognize that the expression is a product of two squares: \((24^2)(0.5^2)\).

Recall the property of exponents that states \((a^m)(b^m) = (ab)^m\). Apply this to rewrite the expression as \((24 \times 0.5)^2\).

Calculate the product inside the parentheses: \(24 \times 0.5\).

Square the result obtained from the previous step to find \((24 \times 0.5)^2\).

This final value is the result of the original expression \((24^2)(0.5^2)\).

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Exponentiation

Exponentiation is the process of raising a base number to a power, indicating how many times the base is multiplied by itself. For example, 24² means 24 multiplied by 24. Understanding this helps in simplifying expressions involving powers.

Multiplication of Powers

When multiplying numbers raised to powers, each term is evaluated separately before multiplying the results. For instance, (24²)(0.5²) means calculate 24² and 0.5² individually, then multiply the two results together.

Mental Math Strategies

Mental math involves simplifying calculations without paper or a calculator by using number properties and estimation. Recognizing squares of common numbers and decimals, like 0.5² = 0.25, aids in quickly solving problems mentally.