Math Problem Statement

Evaluate the expressions involving fractions, cube roots, and exponents as shown in the image.

Solution

Let's solve each part of the expressions shown in the image step by step.

Expression 1:

(14×4178)\left(\frac{1}{4} \times \frac{4}{1} - \frac{7}{8}\right)

  1. Multiply 14\frac{1}{4} by 41\frac{4}{1}: 14×41=1\frac{1}{4} \times \frac{4}{1} = 1
  2. Subtract 78\frac{7}{8} from 1: 178=8878=181 - \frac{7}{8} = \frac{8}{8} - \frac{7}{8} = \frac{1}{8}

So, the result of the first part is: 18\frac{1}{8}

Expression 2:

43\sqrt[3]{4}

This is asking for the cube root of 4. Since the cube root of 4 is not an integer, the exact value is: 431.5874\sqrt[3]{4} \approx 1.5874

Expression 3:

8878\frac{8}{8} - \frac{7}{8} This simplifies to: 18\frac{1}{8}

Expression 4:

232^3

This is 22 raised to the power of 33: 23=82^3 = 8

Expression 5:

18×81\frac{1}{8} \times \frac{8}{1}

This simplifies to: 18×8=1\frac{1}{8} \times 8 = 1

Final Answer Summary:

  1. (14×4178)=18\left(\frac{1}{4} \times \frac{4}{1} - \frac{7}{8}\right) = \frac{1}{8}
  2. 431.5874\sqrt[3]{4} \approx 1.5874
  3. 8878=18\frac{8}{8} - \frac{7}{8} = \frac{1}{8}
  4. 23=82^3 = 8
  5. 18×81=1\frac{1}{8} \times \frac{8}{1} = 1

Would you like any further details or explanations? Here are five related questions to deepen your understanding:

  1. How do you simplify fractions with common denominators?
  2. What is the cube root of a number and how is it calculated?
  3. How do powers of numbers work in arithmetic?
  4. Why does multiplying a fraction by its reciprocal result in 1?
  5. What is the difference between a square root and a cube root?

Tip: When working with roots and powers, remember that square roots and cube roots are inverses of squaring and cubing, respectively.

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Math Problem Analysis

Mathematical Concepts

Fractions
Multiplication of fractions
Subtraction of fractions
Cube roots
Exponents

Formulas

Multiplication of fractions: (a/b) × (c/d) = (a × c) / (b × d)
Subtraction of fractions: (a/b) - (c/b) = (a - c) / b
Exponentiation: a^n = a × a × ... (n times)
Cube root: ∛x is the number that when cubed gives x

Theorems

Reciprocal theorem: Multiplying a number by its reciprocal results in 1

Suitable Grade Level

Grades 6-8