Dividing decimals - why do we move the decimal point?

Why do we move the decimal point in both the dividend and the divisor when dividing decimals by decimals? It is because both the dividend and the divisor are multiplied by 10, 100, 1000, or some other power of ten. In this video, I aim to make sense of this "rule".

Category:

Education

Tags:

• division
• decimals
• decimal point
• long division
• divisor
• mathmammoth

[Acontador13]

shouldn't it be written 0,004/0.344 instead of vice versa?

[MathMammoth]

@Acontador13 The number that goes inside the long division "corner" is the dividend, or the number you are dividing. And 0.004 is the divisor.

[awsome32401]

we move it because we want to

[dwyer2214]

what if you have a whole number divided by a decimal.

[25mgrace]

My math teacher used this video for homework and note- taking. Thnx. These videos are well explained. Our teacher used this to explain this topic to us.

[AdoresAnimals]

Thanks! Lol HW was hardish I am in 5th grade xD. I didn't pay attention LOL now I get it LOL

[SufferInJuly]

.99¢ = 99/100 of 1 cent (That's LESS than 1 penny.)

$.99 = 99/100 of 1 dollar

$.99 = 99 cents or 99¢

Why do people not know this?

.99¢ makes no sense anyway as numbers appearing to the right of the decimal point ALWAYS represent a fraction of 1. Whole number ALWAYS appear to the left of the decimal point.

[Ambushcrysis]

Thanks for these videos, they are great.