Jacob practices the piano for thirty minutes at a time. He works on a song that takes two minutes to play. Playings of the Remaining Time Song Quantity Name to Practice Unit playings Define a unit for the remaining time that Jacob needs to practice. Question 1 Question 2 1. How many more minutes does Jacob need to practice after playing the song once? Expression 2. How many more minutes does Jacob need to practice after playing the song nine playings?
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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Modeling Two-Step Expressions
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Sample Problem
Hints
Jacob practices the piano for thirty minutes at
a time. He works on a song that takes two
minutes to play.
Playings of the Remaining Time
Song
Quantity Name
to Practice
Unit
playings
Define a unit for the remaining time that
Jacob needs to practice.
Question 1
Question 2
1. How many more minutes does Jacob need
to practice after playing the song once?
Expression
2. How many more minutes does Jacob need
to practice after playing the song nine
playings?
Enter a variable for the number of times
Jacob plays the song and use this variable
to write an expression for the remaining
time that Jacob needs to practice.
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We can use the method of finding unknown value by using the simple algebraic expressions.
here we can use two unknown values x and y.
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