[quiz 1]_year 7_numbers Classification And Number Operation

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| By Eli

Eli

Community Contributor

Quizzes Created: 2 | Total Attempts: 185

Questions: 10 | Attempts: 130 | Updated: Jul 30, 2023

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Questions and Answers

1.

What do you know about integers numbers?
2.

What is PEMDAS!
3.

Explain about number classification!
4.

Evaluate 120 : (8-2) + 15 =
- A.
  
  18
- B.
  
  25
- C.
  
  28
- D.
  
  35
Correct Answer
D. 35

Explanation
The given expression can be simplified by first evaluating the parentheses. 8-2 equals 6. Then, adding 15 to 6 gives us 21. Finally, dividing 120 by 21 equals 5.714. Since none of the answer choices match this result, the correct answer is not available.

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5.

Evaluate (16 + 4) x (16 - 8 +2) =
- A.
  
  198
- B.
  
  200
- C.
  
  250
- D.
  
  20
Correct Answer
B. 200

Explanation
The expression can be simplified using the order of operations, which states that we should first perform any calculations inside parentheses. Inside the first set of parentheses, 16 + 4 equals 20. Inside the second set of parentheses, 16 - 8 + 2 equals 10. Finally, we multiply 20 by 10 to get 200.

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6.

Zero is a natural number.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Zero is not considered a natural number. Natural numbers are typically defined as the positive integers starting from 1. Zero, on the other hand, represents the absence or lack of quantity, and is not considered a positive integer. Therefore, the statement that zero is a natural number is false.

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7.

Select the ones you like about '7' in number classification!
- A.
  
  Rational numbers
- B.
  
  irrational numbers
- C.
  
  Integers numbers
- D.
  
  Natural numbers
Correct Answer(s)
C. Integers numbers
D. Natural numbers

Explanation
The number '7' belongs to the category of integers and natural numbers. Integers are whole numbers that include both positive and negative numbers, and natural numbers are positive whole numbers. Since '7' is a positive whole number and not a fraction or decimal, it falls under both classifications.

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8.

Select the ones you like about '-3' in number classification!
- A.
  
  Integers
- B.
  
  Natural
- C.
  
  Whole
- D.
  
  Rational
Correct Answer(s)
A. Integers
D. Rational

Explanation
The number -3 is classified as an integer because it is a whole number that can be positive, negative, or zero. It is also classified as rational because it can be expressed as a fraction, -3/1.

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9.

The total cost of 8 schoolbags is Rp192.000,00. Find the total cost of 5 similar schoolbags.
- A.
  
  Rp100.000,00
- B.
  
  Rp120.000,00
- C.
  
  Rp160.000,00
- D.
  
  Rp220.000,00
Correct Answer
B. Rp120.000,00

Explanation
If the total cost of 8 schoolbags is Rp192.000,00, we can find the cost of 1 schoolbag by dividing the total cost by the number of schoolbags. So, the cost of 1 schoolbag is Rp192.000,00 / 8 = Rp24.000,00. To find the cost of 5 similar schoolbags, we multiply the cost of 1 schoolbag by 5. Therefore, the total cost of 5 similar schoolbags is Rp24.000,00 * 5 = Rp120.000,00.

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Current Version
Jul 30, 2023

Quiz Edited by
ProProfs Editorial Team
Jul 28, 2019

Quiz Created by
Eli

[quiz 1]_year 7_numbers Classification And Number Operation

What do you know about integers numbers?

What is PEMDAS!

Explain about number classification!

Evaluate 120 : (8-2) + 15 =

Evaluate (16 + 4) x (16 - 8 +2) =

Zero is a natural number.

Select the ones you like about '7' in number classification!

Select the ones you like about '-3' in number classification!

The total cost of 8 schoolbags is Rp192.000,00. Find the total cost of 5 similar schoolbags.