Year 1 vocabulary glossary

number

A number is a value used for counting, ordering or measuring, such as 14 or 100.

count

Count means to find out how many there are.

digit

A digit is a single symbol used to make numbers.

tens

The tens digit shows how many groups of ten are in a number, such as the 1 in 14.

ones

The 4 is in the ones place because it is the first digit on the right.

more

More than means a number is bigger.

less

Less than means a number is smaller.

order

Order means putting numbers, amounts or fractions in a sequence, either from smallest to largest or largest to smallest.

equal

Equal means two numbers or amounts are the same.

compare

Compare means to look at two numbers, amounts or fractions and decide which is bigger, smaller, or if they are equal.

add

Add means to put numbers together to find a total.

plus

Plus (+) is the symbol we use for addition.

total

The total is the final amount when you add numbers together.

subtract

Subtract means to take one number away from another.

minus

Minus (−) is the symbol we use for subtraction.

take away

Take away is another way to say subtract.

equals

Equals (=) means both sides are the same amount.

number bond

A number bond is a pair of numbers that add together to make a given total.

inverse

Inverse means the opposite operation. Addition and subtraction are inverses — they undo each other.

multiply

Multiply means to add equal groups together.

times

Times (×) is the symbol we use for multiplication.

groups of

Groups of means we have a certain number of equal sets.

double

Double means to multiply by 2.

multiple

A multiple is the answer you get when you multiply a number by another whole number.

repeated addition

Repeated addition is adding the same number over and over again.

half

A half is one of two equal parts of a whole.

quarter

A quarter is one of four equal parts of a whole.

whole

A whole is the entire shape or amount.

equal parts

Equal parts mean pieces that are exactly the same size.

share

Share means to divide something into equal parts.

divide

Divide means to split into equal groups.

numerator

The numerator is the top number in a fraction. It tells us how many parts we have.

denominator

The denominator is the bottom number in a fraction.

square

A square has 4 sides.

rectangle

A rectangle has 4 straight sides — opposite sides are equal in length — and 4 corners.

triangle

A triangle has 3 sides.

circle

A circle is round.

side

A side is a straight line that forms part of a shape.

corner

A corner (also called a vertex) is where two sides meet.

straight

Straight means not curved.

round

Round means curved, like a circle.

flat

Flat means the shape is two-dimensional — it has no thickness.

vertex

A vertex is a corner where edges meet.

cube

A cube has 6 flat faces.

cuboid

A cuboid has 12 edges.

sphere

A sphere has 1 curved face.

cone

A cone has 1 vertex.

cylinder

A cylinder can roll on its curved side.

face

A face is a flat or curved surface on a 3D shape.

edge

An edge is where two faces meet.

vertex

A vertex is a corner where edges meet.

roll

Roll means the shape can move by turning around, like a wheel.

stack

Stack means the shape can be placed on top of each other safely.

curved

Curved means rounded, not straight.

flat

Flat means a surface that is level and not curved.

left

Left is the side of your body where your thumb is on your left hand when your palm faces forward.

right

Right is the side of your body where your thumb is on your right hand when your palm faces forward.

above

Above means higher up than something else.

below

Below means lower down than something else.

besides

Beside means next to something.

between

Between means in the middle of two things.

forwards

Forwards means moving in the direction you are facing.

backwards

Backwards means moving in the opposite direction to the one you are facing.

full turn

A full turn means turning all the way round so you face the same direction as when you started.

half turn

A half turn means turning halfway so you face the opposite direction.

quarter turn

A quarter turn means turning a quarter of the way so you face a new direction.

clockwise

Clockwise means turning in the same direction as the hands on a clock move.

anticlockwise

Anticlockwise means turning in the opposite direction to the hands on a clock.

long

Long means having a large distance from one end to the other.

short

Short means having a small distance from one end to the other.

tall

Tall means having a large height.

heavy

Heavy means having a large mass.

light

Light means having a small mass.

full

Full means a container has as much as it can hold.

empty

Empty means a container has nothing inside it.

centimetre (cm)

A centimetre is a small unit for measuring length.

metre (m)

A metre is a larger unit for measuring length.

gram (g)

A gram is a small unit for measuring mass.

kilogram (kg)

A kilogram is a larger unit for measuring mass.

litre (L)

A litre is a larger unit for measuring capacity.

millilitre (ml)

A millilitre is a small unit for measuring capacity.

compare

Compare means to look at two numbers, amounts or fractions and decide which is bigger, smaller, or if they are equal.

measure

Measure means to find out how long, heavy or how much something holds using a tool.

clock

A clock is a tool we use to tell the time.

hour hand

The hour hand is the shorter hand on a clock.

minute hand

The minute hand is the longer hand on a clock.

o'clock

O'clock means the time is exactly on the hour.

half past

Half past means 30 minutes past the hour.

hours

Hours are the larger units of time.

minutes

Minutes are smaller units of time.

analogue

Analogue clocks have hands that move around a dial.

digital

Digital clocks show the time using numbers.

coin

A coin is a piece of metal money.

penny

Penny (plural: pence) is the unit of money we use in the UK.

pence (p)

Pence (the plural of penny) is the unit of money we use in the UK. The symbol for pence is p.

cost

Cost means the price you must pay to buy something.

total

Total means the whole amount.

change

Change is the money you get back when you pay with more than the cost.

spend

Spend means to use money to buy something.

value

Value is how much something is worth, such as the value of a digit or a coin.

pictogram

A pictogram uses pictures or symbols to show data.

block diagram

A block diagram uses coloured blocks (squares) to show data.

data

Data is information we collect.

count

Count means to find out how many there are.

total

The total is the final amount when you add everything together.

most

Most means the greatest amount.

least

Least means the smallest amount.

equal

Equal means two amounts are the same.

symbol

A symbol is a picture or mark used to represent something. ★ could mean 1 child.

key

A key tells you what each symbol means. ★ = 1 child.