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If you're encountering difficulties in solving exercises 1, 2... of the lesson on Real Numbers and the absolute value of real numbers, then refer to Solving 7th Grade Math Page 38 Volume 1 of the Horizon of Creativity SGK Textbook. This is a very detailed solving document that will help you study Math effectively.
Check out more great solving materials:
- Complete set of Solving 7th Grade Math Horizon of Creativity books
- Solving 7th Grade Math Page 35 Volume 1 of the Sky Kite book - Exercise 1. Irrational numbers. Square root
- Solving 7th Grade Math Page 25 Volume 1 of the Knowledge Connection book - Final exercise of chapter 1
Solving 7th Grade Math Page 38 Volume 1 of the Horizon of Creativity SGK Textbook
Real Numbers. Absolute Value of a Real Number
1. Solve Exercise 1 Page 38 SGK Math Grade 7
Problem: Replace each ? with a symbol or expression to make a correct statement.
Solution Guide:
Z represents the set of integers, including positive integers, zero, and negative integers.
Q represents the set of rational numbers, including integers, finite decimal numbers, and recurring decimal numbers.
I represents the set of irrational numbers, consisting of infinite non-recurring decimal numbers.
Answer:
2. Exercise 2 Solution, Page 38, 7th Grade Math Textbook
Problem: Arrange the given real numbers in ascending order.
Guide:
Convert the real numbers into decimal form and then compare them.
Answer:
3. Solution to Exercise 3, Page 38, 7th Grade Math Textbook
Problem: Determine whether the following statements are true or false.
Guide:
Each non-repeating infinite decimal number is the decimal representation of a number, known as an irrational number. It is denoted as I.
The set of real numbers R consists of irrational and rational numbers.
Answer:
a) True.
b) False (because all integers are real numbers).
c) True.
d) False (because 0 is not an irrational number).
e) 1; 2; 3; 4 are real numbers => True.
4. Solve Exercise 4 Page 38 SGK Math Grade 7
Problem: Replace the ? with appropriate digits.
Solution Guide:
Use the rule of comparing two decimal numbers to fill in the appropriate digits for the ?.
Answer:
5. Solve Exercise 5 Page 38 SGK Math Grade 7
Problem: Find the opposite number of the following numbers:
Solution Guide:
The opposite of the number x is denoted as -x.
Answer:
6. Solve Exercise 6 Page 38 SGK Math Grade 7
Problem: Find the absolute value of the following numbers:
Instructions:
Answer:
7. Solve Exercise 7 Page 38 SGK Math Grade 7
Problem: Arrange the absolute values of the following numbers in ascending order:
Instructions:
Calculate the absolute values of the numbers.
Compare and then arrange in ascending order.
Answer:
Task:
Calculate the values of x and y, given that:
Guidance:
Answer:
Task 9:
Through the solving material for Grade 7 Math page 38 Volume 1 of the Horizon of Creativity SGK book, it is hoped that students have been able to solve all exercises of lesson 2 chapter 2: Arithmetic.
Reference Exercises:
- Solve Exercise 3 Page 42 SGK Math Grade 7 - Exercise 3: Rounding numbers and estimating results
- Solve Exercise 4 Page 45 SGK Math Grade 7 - Final exercise of chapter 2
