How many can you solve? Brain-flexing math riddle quiz

A math quiz with answers that can vary

Trivia about a math problem with divided answers #math #shortsfeed #03

What’s the answer to “9×9÷9×9”? The result changes depending on the order of operations.

How do you think it should be calculated correctly? Elementary school kids who are learning this in real time might come up with the answer right away.

But adults might find themselves thinking, “Huh? Where do I start the calculation?” Should you go from left to right, or do the multiplications first? Please think it through and try to find the answer.

Problems that look simple like this can really make you overthink, can’t they?

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sasashina

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What number goes in the question mark?

[Number Puzzle] Can you find the rule in the equations...? #IQTest #AhaMoment #Quiz #BrainTraining

If you’re not good at arithmetic and don’t even want to look at numbers, how about getting used to them with riddle-like puzzles? For example, consider this sequence: 11×11=4, 22×22=16, 33×33=36—at first glance, the operations and answers don’t seem to make sense.

At the end, you have 55×55=? and you’re asked to determine what should go in the question mark based on the rule behind the previous expressions.

The hint is to break the numbers in each expression into separate parts.

If you get that flash of insight and find the answer, your discomfort with numbers should start to fade! Give it a try.

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SAKI

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Where you look is the key.

[Math Quiz] Where you look is the key—an elementary school–level problem!!

There is a figure where a large rectangle is divided into nine smaller rectangles.

Each small rectangle is labeled with the sum of the lengths of its sides, and you are to use those clues to find the answer.

However, if you try to calculate it straightforwardly from the given numbers, the computation becomes extremely complicated.

If you pause and change your perspective, though, you can reach the correct answer using only a very simple multiplication.

The key to solving geometry problems is to take your time looking at the figure and identify distinctive features.

Use the flexible thinking unique to elementary school students to arrive at the solution!

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Hane Keisuke

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If you understand it: One question from an IQ 150+ quiz

[Difficult Quiz] Can you figure out the number that goes in the “?” If you can, you’re a genius with an IQ of 150 or higher!

Rather than arithmetic, it’s a puzzle of rules that uses numbers.

As long as you know numbers and hiragana, anyone can solve it.

Flexible-minded children might have a higher success rate than rigid-thinking adults.

Want to take on the challenge of the IQ-150 barrier?

[Arithmetic Olympiad Super-Challenge] What is the perimeter of the rectangle?

An extremely difficult problem from the Math Olympics

At first glance, the perimeter here looks difficult to figure out, but since the light green shape inside is a square, you can easily find the answer by setting up an equation: let the side length of the square be ○, let the part obtained by subtracting the square’s side from 12 cm be □, and the part obtained by subtracting the square’s side from 9 cm be △.

For problems that seem hard, it’s a good idea to try replacing numbers with symbols and see if you can simplify your approach.

Give it a try!

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Hirakawa Masako (Bōkarisuto: Sakata Mizumako)

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