Which is the most accurate way to estimate 25% of 81? Choices: (A)1/4 × 83 (B)1/4 × 80 (C)1/3 × 83 (D)1/3 × 80

Understand Problem: Understand the problem and identify the correct mathematical operation. To find 25% of a number, you multiply the number by 0.25 or divide it by 4. Evaluate Choices: Evaluate each choice by performing the calculation. (A) 1/4 × 83 = 20.75 (B) 1/4 × 80 = 20 (C) 1/3 × 83 = 27.67 (D) 1/3 × 80 = 26.67 Compare Results: Compare the results with the exact calculation of 25% of 81. 25% of 81 = 0.25 × 81 = 20.25 Determine Closest Choice: Determine which choice is closest to the exact value. Comparing the results: (A) 20.75 is close but slightly higher. (B) 20 is the closest and almost exact. (C) 27.67 is too high. (D) 26.67 is also too high.

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Which is the most accurate way to estimate $25\%$ of $81$ ? $\newline$ Choices: $\newline$ (A) $\frac{1}{4} \times 83$ $\newline$ (B) $\frac{1}{4} \times 80$ $\newline$ (C) $\frac{1}{3} \times 83$ $\newline$ (D) $\frac{1}{3} \times 80$

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Math Problems

Grade 7

Estimate percents of numbers

Full solution

Q. Which is the most accurate way to estimate

25\%

81

\newline

Choices:

\newline

(A)

\frac{1}{4} \times 83

\newline

(B)

\frac{1}{4} \times 80

\newline

(C)

\frac{1}{3} \times 83

\newline

(D)

\frac{1}{3} \times 80

Understand Problem: Understand the problem and identify the correct mathematical operation. $\newline$ To find $25\%$ of a number, you multiply the number by $0.25$ or divide it by $4$ .
Evaluate Choices: Evaluate each choice by performing the calculation. $\newline$ (A) $\frac{1}{4} \times 83 = 20.75$ $\newline$ (B) $\frac{1}{4} \times 80 = 20$ $\newline$ (C) $\frac{1}{3} \times 83 = 27.67$ $\newline$ (D) $\frac{1}{3} \times 80 = 26.67$
Compare Results: Compare the results with the exact calculation of $25\%$ of $81$ . $\newline$ $25\%$ of $81 = 0.25 \times 81 = 20.25$
Determine Closest Choice: Determine which choice is closest to the exact value. $\newline$ Comparing the results: $\newline$ (A) $20.75$ is close but slightly higher. $\newline$ (B) $20$ is the closest and almost exact. $\newline$ (C) $27.67$ is too high. $\newline$ (D) $26.67$ is also too high.