Math Problem Statement

Evaluate the expression: (5/8 + 4.625) * (-1.2 - 3 1/4) * 1/4

Solution

Let's go step by step to solve the given expression from your image:

(58+4.625)×(1.2314)×14\left( \frac{5}{8} + 4.625 \right) \times \left( -1.2 - 3 \frac{1}{4} \right) \times \frac{1}{4}

Step 1: Simplify each term individually

Term 1: 58+4.625\frac{5}{8} + 4.625

Convert 4.625 to a fraction: 4.625=46251000=3784.625 = \frac{4625}{1000} = \frac{37}{8} So, the expression becomes: 58+378=428=5.25\frac{5}{8} + \frac{37}{8} = \frac{42}{8} = 5.25

Term 2: 1.2314-1.2 - 3 \frac{1}{4}

Convert 3143 \frac{1}{4} to an improper fraction: 314=1343 \frac{1}{4} = \frac{13}{4} Now simplify: 1.2=65-1.2 = -\frac{6}{5} We need a common denominator to subtract these: 65134=24206520=8920=4.45-\frac{6}{5} - \frac{13}{4} = -\frac{24}{20} - \frac{65}{20} = -\frac{89}{20} = -4.45

Term 3: 14\frac{1}{4}

Step 2: Multiply the simplified terms

Now multiply: 5.25×(4.45)×145.25 \times (-4.45) \times \frac{1}{4}

Start by multiplying 5.25×(4.45)5.25 \times (-4.45): 5.25×(4.45)=23.36255.25 \times (-4.45) = -23.3625

Now multiply the result by 14\frac{1}{4}: 23.3625×14=5.840625-23.3625 \times \frac{1}{4} = -5.840625

Final Answer:

The simplified result is approximately 5.841-5.841.

Would you like further clarification or details?

Related Questions:

  1. How do you convert decimals to fractions?
  2. What are some strategies for simplifying mixed fractions?
  3. How can you find a common denominator for different fractions?
  4. What is the importance of negative signs when performing arithmetic operations?
  5. How does multiplying by fractions affect the size of a number?

Tip:

Always check if terms can be simplified early in the process to make calculations easier!

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Math Problem Analysis

Mathematical Concepts

Arithmetic
Fractions
Decimals
Multiplication
Negative Numbers

Formulas

Fraction addition: a/b + c/b = (a + c)/b
Converting mixed numbers to improper fractions
Decimal to fraction conversion
Multiplying negative and positive numbers

Theorems

Properties of operations with negative numbers
Order of operations (PEMDAS)

Suitable Grade Level

Grades 6-8