An exercise on literal calculation and reduction of literal expressions in the fifth grade is always essential for a student. Indeed, you will discover a new way to deal with math problems.
This problem is an end-of-chapter synthesis exercise. In mathematics, literal calculation consists of performing operations (addition, subtraction, multiplication, division) on algebraic expressions, using the rules of calculation. For example, the addition of two algebraic expressions can be done by adding the corresponding terms (as one would do for numbers) or by using the distributivity rule, which allows the addition and multiplication to be swapped.
You will also develop new skills with literal calculation. Remember to follow the lecture carefully and challenge the teacher if there are points you don’t understand. This will help you avoid making certain mistakes on the math test. Use all the necessary materials to make a good practice.
We will find all the properties of the course such as developing and reducing an expression as well as the use of simple distributivity in fifth grade.
The turtle and the salad
- The turtle must join the salad.
Express as a function of x, the length of the broken line between the turtle and this salad.
- Calculate the length of this broken line when x = 2 m .
- The average speed of a turtle is 0.25 km/h .
Determine the time, rounded to the nearest minute, it took her to reach this salad when x = 2 m.
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