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# What are Oblong numbers?

Updated: 4/28/2022

Wiki User

10y ago

An oblong number (also called a "pronic number") represents an oblong shape created when dots are placed equidistant from each other in rows and columns. The number of dots across must be one number greater than the number of dots down, so if I make a grid of dots which is 3 dots across and two dots down, it represents the number 6, the total number of dots. Six, then, is the oblong number. If the oblong has 4 dots across and 3 dots down, it equals 12 dots, so the oblong number is 12.

. . . .

. . . . = 12 This visual representation of a number is called an "array."

. . . .

These arrays are used commonly now in schools to help students understand the concept of multiplication. In this case, (3X4=12).

The algebraic formula for such a number is: n(n+1). This is an integer (number) times the same number plus one. So 3 X (3=1), or four, equals 12.

The first few oblong numbers are 2, 6, 12, 20, and 30. This series of numbers is the successive sums of the series of even numbers or the products of two consecutive numbers: 2 = 1Â·2; 6 = 2Â·3 = 2 + 4; 12 = 3Â·4; and so on.

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10y ago

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Q: What are Oblong numbers?
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Related questions

### What is the Nth Term Formula for Oblong Numbers?

The Nth term formula for oblong numbers is N = N(N+1)

### Is 8 an oblong number?

No. Oblong numbers are rectangular numbers with the length one longer than the width, ie they are of the form n(n+1) = n2 + n. The first few oblong numbers are 2, 6, 12, ... 8 is not one of these.

### How did an oblong number get its name?

It is a composite number which is a multiple of two different factors, each greater than 1. The name derives from the fact that a rectangle (or oblong) whose sides are those two numbers will have an area equal to the oblong number. If there were no requirement that the two numbers are greater than 1 then every number would be an oblong number.

### What are the cheats for oblong on hooda math they are numbers?

https://quizlet.com/94321801/oblong-codes-flash-cards/https://quizlet.com/94321801/oblong-codes-flash-cards/https://quizlet.com/94321801/oblong-codes-flash-cards/https://quizlet.com/94321801/oblong-codes-flash-cards/. Codes are here!

### Is oblong a noun?

Yes the word oblong can be a noun. It is something with an oblong shape.

### Oblong as a sentence?

Can you give me a sentence for oblong? oblong about 12 inches by 8 inches

### Where is the Oblong Public Branch Library in Oblong located?

The address of the Oblong Public Branch Library is: 110 East Main Street, Oblong, 62449 1411

### What is the Filipino term of the shape oblong?

The Filipino term for the shape oblong is &quot;habilog.&quot;

### Can you put oblong in a sentence?

The table was oblong in shape, not square.

### Another name for an oblong?

"Rectangle" is virtually synonymous with "oblong."

### When was Angus Oblong born?

Angus Oblong was born in 1976.

### What is the Difference between oblong and rectangle?

An oblong is a rectangle. However, an oblong is not a square. Both are rectangles because they both have 4 right angles, but a square is equal-sided and an oblong isn't.