Algebra Readiness Q6 | Pierce College math assessment sample

TL;DR

This content explains how to calculate 40% of 72.5 using a simple step-by-step method.

Transcript

number six what is 40% of 72.5 let me show you a more eligible way to do this and is we look at this sentence and change that into an equation to do that we first noticed that we have the word but that's Vietnam and in algebra we would like to use the letter X to Steph unknown so just put down the eggs for the work what and we know X will be equal ... Read More

Key Insights

• ☺️ Using algebraic representation simplifies problem-solving by replacing unknown quantities with variables like 'X'.
• 👈 Converting a percentage into a decimal is achieved by shifting the decimal point two places to the left in a whole number.
• 🥇 When multiplying decimal numbers, aligning them correctly and considering the total decimal places is necessary for accurate calculations.
• #️⃣ Moving the decimal point in the final answer is determined by the total number of decimal places in the original number and the percentage.

Questions & Answers

Q: How do you convert a percentage into a decimal?

To convert a percentage into a decimal, move the decimal point two places to the left. For example, 40% becomes 0.4.

Q: What is the step-by-step process to find 40% of 72.5?

First, convert 40% into a decimal, which is 0.4. Then, multiply 0.4 by 72.5. The result is the answer to the problem.

Q: How do you handle decimal multiplication when calculating 40% of 72.5?

To multiply decimal numbers, line up the numbers as if you were multiplying whole numbers. Then, count the total number of decimal places in both numbers and place the decimal point in the final answer accordingly.

Q: Why is it important to count decimal places when finding the answer?

Counting decimal places is crucial because it determines the correct placement of the decimal point in the final answer, ensuring accuracy in the calculation.

Summary & Key Takeaways

• Convert the percentage into a decimal by moving the decimal point two places to the left.

• Multiply the decimal value by the given number using the traditional multiplication method.

• Count the total number of decimal places in the original number and the percentage to correctly place the decimal point in the final answer.