Lesson 7.3Absolute Value and Total Distance
Start hereWords, worked example, and sentence starters
Learning target I can find the absolute value of a rational number — an integer, fraction, or decimal — as its distance from zero.
Start hereWords for this lesson
Read each word before you begin. Say it out loud.
| Word | What it means | Example |
|---|---|---|
| IntegerSpanish: Número entero | Whole numbers and their opposites, like -2, -1, 0, 1, 2. | ... -3, -2, -1, 0, 1, 2, 3 ... shown on a number line with 0 in the center |
| PositiveSpanish: Positivo | A number bigger than zero, to the right of zero on a number line. | 50 sits right of zero |
| NegativeSpanish: Negativo | A number smaller than zero, to the left of zero on a number line. | −50 sits left of zero |
| Absolute valueSpanish: Valor absoluto | How far a number is from zero. It is never negative. | |−50| = 50 |
| OppositeSpanish: Opuesto | Two numbers the same distance from zero, on opposite sides, like 3 and -3. | 3 and -3 are opposites — both are 3 units from 0 |
| Rational numberSpanish: Número racional | A number that can be written as a fraction of two integers, with a bottom number that is not zero. | −1/2, 0 and 5/4 each sit at one exact point. |
How it worksWorked example
These numbers are not on your problems. The steps are. Follow them with your own numbers.
How far is it from −8 to 3 on a number line?
- 0 is between −8 and 3, so they are on opposite sides.
- |−8| = 8 and |3| = 3.
- Add the distances: 8 + 3 = 11.
Answer: 11 units
Say it and write itSentence starters
Finish each sentence out loud with a partner. Then use them in your writing.
- The absolute value of is , so it sits units from zero.
- Zero falls between and , so I the two distances.
- The total distance is because .
- Magnitude tells me , but it does not tell me .
Word bank absolute valuemagnitudedistancetotalzerobetweenaddunitsnegativepositivenumber lineopposite sides
Watch out!A common mistake
A common mistake in Integers and Absolute Value is judging size by the digits alone instead of position on the number line
Lesson 7.3Absolute Value and Total Distance
Apply Day · Version ASupported practice
Learning target I can find the absolute value of a rational number — an integer, fraction, or decimal — as its distance from zero.
-
1Complete each step, then write the final answer.
Find |−16|.
Show your workHint Count the units from −16 to 0.
Final answer: -
2Complete each step, then write the final answer.
Find |10|.
Show your workHint 10 is to the right of 0. How far is it?
Final answer: -
3Complete each step, then write the final answer.
A fish swims at −1.5 meters. The surface is 0. How far is the fish from the surface?
Show your workHint Find |−1.5|.
Final answer:
Lesson 7.3Absolute Value and Total Distance
Apply Day · Version BCore practice
Learning target I can find the absolute value of a rational number — an integer, fraction, or decimal — as its distance from zero.
-
1Complete each step, then write the final answer.
Ben says |−5| = −5. Is he right? What is |−5|?
Show your workFinal answer: -
2Complete each step, then write the final answer.
Find |−2 2/5|.
Show your workFinal answer: -
3Complete each step, then write the final answer.
Find |−14|.
Show your workFinal answer:
Lesson 7.3Absolute Value and Total Distance
Apply Day · ChallengeExtension
Learning target I can find the absolute value of a rational number — an integer, fraction, or decimal — as its distance from zero.
-
1Circle the letter of the best answer. Show how you know.
What is the value of |−12|?
- A0
- B1/12
- C12
- D−12
Show your work -
2Circle the letter of the best answer. Show how you know.
Which number is farthest from 0: −8.2, 7.9, −0.5 or 8?
- A−8.2
- B8
- C7.9
- D−0.5
Show your work -
3Complete each step, then write the final answer.
Find |−5 1/3|.
Show your workFinal answer: