# Try Passing This School Test Without Making a Single Mistake

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I’ve forgotten so much since my school days.

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What are your thoughts on this subject?

340 Comments

mapko

I erred the same. 9 is correct. To simplify 6 divided by 2/3. The answer obviously 9. Isabel Weinberg,

0

Sep 28, 2021 10:02AM

Isabel Weinberg

I midread no9 and take issue with no7 - the answer has to be 1 as you work out the inside of the bracket first.

1

Sep 22, 2021 7:55PM

Alan Waites

Mike Hibner, EH no, BODMAS comes into play, you do the Bracket first, then the Divide, then finally the Multiply.

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Aug 27, 2021 5:20PM

lls

...surprised that I even received a 6...

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Aug 20, 2021 1:23PM

Mike Hibner

The formula for question 6) is ambiguous. 6/2(1+3) can be interpreted to be 6/(2x(1+2))=6/(2x3)=6/6=1 or interpreted as (6/2)x(1+2)=3x3=9. Obviously the test writer knows this and should give credit for either.

1

Aug 8, 2021 7:23PM

Mike Hibner

Jacqueline Coing and Rosemary Elstone (as well as myself) need to read the question correctly. Pi IS an irrational number but is also a positive number and a natural number. Since the question asks which is incorrect, the only one left is rational number...

2

Aug 8, 2021 7:09PM

Linda Stegall

8/9 Missed #6.

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Jun 28, 2021 6:26PM

Jacqueline Coing

7/9, however I claim 10/10. #7 The answer is 1 not 9 BIDMAS. #9 The answer is irrational number not a rational number.

0

Jun 27, 2021 2:52AM

Peter Abrams

Peter Abrams, What’s an Irrational Number?
The opposite of rational numbers are irrational numbers.
In simple terms, irrational numbers are real numbers that can’t be written as a simple fraction like 6/1.
Take π.
π is a real number. But it’s also an irrational number, because you can’t write π as a simple fraction:
π = 3.1415926535897932384626433832795 (and counting)
There’s no way to write π as a simple fraction, so it’s irrational.
The same goes for √2.
The √2 equals 1.4142135623730950...(etc).
You can’t make √2 into a simple fraction, so it’s an irrational number.

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Jun 19, 2021 10:58PM

Peter Abrams

Stacie , Pi is NOT a rational number. It cannot be expressed accurately by dividing some number by some other number. All Rational numbers CAN be expressed as x/y for some appropriate values of x and y. It is an IRRATIONAL number precisely for this reason.

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Jun 19, 2021 10:55PM

earlepg

6/9 Never a math teacher. I forgot that PEMDAS, staying within the () at the wrong time. Knew, but marked Pi wrong.

1

May 30, 2021 6:08AM

William Laughlin

Klopcic Harald,
The answer to question #7 is correct.
Here's how it's done:
6 ÷ 2 (1 + 2) = X
6 ÷ 2 (3) = X or 6 ÷ 2 × 3 = X
Following PEMDAS, we do the operation inside the parentheses first.
There are no exponents, so we move on to multiplication and division, which are done in the order they appear in the equation moving from left to right. Multiplication does not always precede division. In this equation, it follows division in order of appearance in the equation so we multiply AFTER dividing.
6 ÷ 2 × 3 = X
3 × 3 = X
9 = X
In order to achieve the answer of 1, you would have had to multiply before dividing, which goes against the proper order of operations.

0

May 29, 2021 1:14PM

William Laughlin

Pam Smolek,
You are correct. The correct answer is not offered.
For the minute hand to advance 1/4 hour, the hour hand must also advance 1/4 of the way between the 3 and the 4, which means it has moved 7.5° around the clock.

1

May 29, 2021 1:12PM

William Laughlin

Jonathan Martinez,
The answer to question #7 is correct.
Here's how it's done:
6 ÷ 2 (1 + 2) = X
6 ÷ 2 (3) = X or 6 ÷ 2 × 3 = X
Following PEMDAS, we do the operation inside the parentheses first.
There are no exponents, so we move on to multiplication and division, which are done in the order they appear in the equation moving from left to right. Multiplication does not always precede division. In this equation, it follows division in order of appearance in the equation so we multiply AFTER dividing.
6 ÷ 2 × 3 = X
3 × 3 = X
9 = X
In order to achieve the answer of 1, you would have had to multiply before dividing, which goes against the proper order of operations.

0

May 29, 2021 1:07PM

William Laughlin

Paddy Walsh,
The answer to question #7 is correct.
Here's how it's done:
6 ÷ 2 (1 + 2) = X
6 ÷ 2 (3) = X or 6 ÷ 2 × 3 = X
Following PEMDAS, we do the operation inside the parentheses first.
There are no exponents, so we move on to multiplication and division, which are done in the order they appear in the equation moving from left to right. Multiplication does not always precede division. In this equation, it follows division in order of appearance in the equation so we multiply AFTER dividing.
6 ÷ 2 × 3 = X
3 × 3 = X
9 = X
In order to achieve the answer of 1, you would have had to multiply before dividing, which goes against the proper order of operations.

0

May 29, 2021 1:05PM