Words explained simply

D

Data Maths

Facts and numbers that we collect, like how many children in a class like mango.

Database Computers

An organised collection of information that a computer can search quickly.

Debug Computers

To find and fix the mistakes in a program.

Decimal Maths

A number with a point in it, like 3.5, that shows parts smaller than one.

Decomposer Science

A living thing, such as a fungus, that breaks down dead plants and animals into the soil.

Denominator Maths

The bottom number of a fraction. It tells how many equal parts the whole is cut into.

Density Science

How much matter is packed into a space. Iron is denser than wood, so it sinks in water.

Descending order Maths

Arranged from the biggest to the smallest, like 20, 11, 7, 3.

Desktop Computers

The main screen you see when a computer starts, with its icons.

Dialogue English

The words that characters say to each other in a story.

Diameter Maths

A straight line across a circle through its centre. It is twice as long as the radius.

Dictionary English

A book or website that lists words in A to Z order and tells their meanings.

Difference Maths

The answer when you subtract one number from another. It tells how far apart two numbers are.

Digestion Science

How the body breaks food down into tiny parts it can use.

Digit Maths

One of the ten number symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.

Digital footprint Computers

The trail of information about you that is left behind when you use the internet.

Dividend Maths

The number that is being divided. In 12 divided by 3, the dividend is 12.

Division Maths

Sharing a number into equal groups, or finding how many times one number fits into another. The sign is ÷.

Divisor Maths

The number you divide by. In 12 divided by 3, the divisor is 3.

DNA Science

The chemical inside cells that carries the instructions for how a living thing grows.

Download Computers

To copy a file from the internet onto your own device.