Unit 2
Expressions of Integers
Expressions of Integers
The absolute value of a number is defined as
the distance from zero.
the distance from zero.
Let's look at 4 on the number line:
If we were to count the number of jumps it would take to get to zero...
...it would take us four jumps. 4 is 4 away from zero.
Therefore:
Let's look at (-4) on the number line:
If we were to count the number of jumps it would take to get to zero...
So the absolute value of both 4 and (-4) is 4. Both 4 and (-4) are 4 away from zero.
This may seem annoyingly obvious, but it leads to many paths in mathematics.
As one mathematician to another, just trust me on this one.
Don't worry, mathsketeers,
we're about to get into some challenging problems
when we learn about algebraic expressions in the next lesson.
This may seem annoyingly obvious, but it leads to many paths in mathematics.
As one mathematician to another, just trust me on this one.
Don't worry, mathsketeers,
we're about to get into some challenging problems
when we learn about algebraic expressions in the next lesson.
Notebook:
Classwork & Homework:
--EngageNY
State Test Practice:
California Standards:
CCSS.Math.Practice.MP5 Use appropriate tools strategically.
CCSS.Math.Practice.MP8 Look for and express regularity in repeated reasoning.
CCSS.Math.Content.6.NS.C.7
Understand ordering and absolute value of rational numbers.
CCSS.Math.Content.6.NS.C.7.c
Understand the absolute value of a rational number as its distance from 0 on the number line; interpret absolute value as magnitude for a positive or negative quantity in a real-world situation. For example, for an account balance of -30 dollars, write |-30| = 30 to describe the size of the debt in dollars.
CCSS.Math.Content.6.NS.C.7.d
Distinguish comparisons of absolute value from statements about order. For example, recognize that an account balance less than -30 dollars represents a debt greater than 30 dollars.
CCSS.Math.Practice.MP8 Look for and express regularity in repeated reasoning.
CCSS.Math.Content.6.NS.C.7
Understand ordering and absolute value of rational numbers.
CCSS.Math.Content.6.NS.C.7.c
Understand the absolute value of a rational number as its distance from 0 on the number line; interpret absolute value as magnitude for a positive or negative quantity in a real-world situation. For example, for an account balance of -30 dollars, write |-30| = 30 to describe the size of the debt in dollars.
CCSS.Math.Content.6.NS.C.7.d
Distinguish comparisons of absolute value from statements about order. For example, recognize that an account balance less than -30 dollars represents a debt greater than 30 dollars.