Numbers and Place Value: Glossary
130 words, listed in the order you meet them in Courseversity lessons.
Full explanations
All words in this topic
Grade 1
count
From Grade 1
To say numbers one by one as you touch each thing.
Learn it in: Understanding numbers (Grade 1), Counting objects from 0–10 (Grade 1), Counting categories (Grade 1)
first, second, third
From Grade 1
Words that tell the order of things.
Learn it in: Understanding numbers (Grade 1)
group
From Grade 1
Things that are together.
Learn it in: Understanding numbers (Grade 1), Combining groups (Grade 1), Sorting objects (Grade 1)
label
From Grade 1
A number used as a name, such as a house number.
Learn it in: Understanding numbers (Grade 1), Classifying objects (Grade 1), Bar graphs (Grade 2)
number
From Grade 1
A word or idea that tells how many or which one. Example: three.
Learn it in: Understanding numbers (Grade 1)
number word
From Grade 1
A number written in letters. Example: five.
Learn it in: Understanding numbers (Grade 1), Reading and writing numbers (Grade 1)
numeral
From Grade 1
The mark we write for a number. Example: 3.
Learn it in: Understanding numbers (Grade 1), Reading and writing numbers (Grade 1), Numbers to 100,000 (Grade 4)
zero
From Grade 1
The number for none. We write 0.
Learn it in: Understanding numbers (Grade 1), Counting objects from 0–10 (Grade 1), Reading and writing numbers (Grade 1)
how many
From Grade 1
The total number of things.
Learn it in: Counting objects from 0–10 (Grade 1), Dividing whole numbers by unit fractions (Grade 5)
one-to-one
From Grade 1
Saying one number for each object, once.
Learn it in: Counting objects from 0–10 (Grade 1)
teen number
From Grade 1
A number from 13 to 19. Eleven and twelve are also “ten and some more”.
Learn it in: Counting from 11–20 (Grade 1)
ten
From Grade 1
A group of 10 ones.
Learn it in: Counting from 11–20 (Grade 1), Understanding tens (Grade 1)
digit
From Grade 1
One of the symbols 0 to 9. The number 12 uses two digits.
Learn it in: Reading and writing numbers (Grade 1), Tens and ones (Grade 1), Understanding ones (Grade 1)
fewer
From Grade 1
A smaller number of things.
Learn it in: Comparing numbers (Grade 1), Finding how many remain (Grade 1), Counting categories (Grade 1)
greater than
From Grade 1
Bigger in amount. 9 is greater than 5.
Learn it in: Comparing numbers (Grade 1), Comparing two-digit numbers (Grade 1), Comparing three-digit numbers (Grade 2)
less than
From Grade 1
Smaller in amount. 5 is less than 9.
Learn it in: Comparing numbers (Grade 1), Comparing two-digit numbers (Grade 1)
more
From Grade 1
A larger number of things.
Learn it in: Comparing numbers (Grade 1), Counting categories (Grade 1), Comparing data (Grade 2)
between
From Grade 1
In the middle of two numbers. 5 is between 4 and 6.
Learn it in: Ordering numbers (Grade 1), Ordering numbers (Grade 1), Spatial reasoning (Grade 2)
order
From Grade 1
Putting things one after another in a rule.
Learn it in: Ordering numbers (Grade 1), Ordering numbers (Grade 1), Comparing lengths (Grade 1)
backwards
From Grade 1
In the direction numbers get smaller.
Learn it in: Counting forwards and backwards (Grade 1)
count back
From Grade 1
Say the numbers in order, getting smaller.
Learn it in: Counting forwards and backwards (Grade 1), Subtraction within 20 (Grade 1), Subtraction within 100 (Grade 2)
count on
From Grade 1
Say the next numbers in order, getting bigger.
Learn it in: Counting forwards and backwards (Grade 1), Counting-on strategies (Grade 1), Counting hundreds (Grade 2)
forwards
From Grade 1
In the direction numbers get bigger.
Learn it in: Counting forwards and backwards (Grade 1)
next
From Grade 1
Comes straight after.
Learn it in: Numbers to 50 (Grade 1), Recognising patterns (Grade 1)
pattern
From Grade 1
Something that repeats in a way you can predict.
Learn it in: Numbers to 50 (Grade 1), Recognising patterns (Grade 1), Multiplication facts for 2, 5 and 10 (Grade 2)
tens
From Grade 1
Groups of ten.
Learn it in: Numbers to 50 (Grade 1), Tens and ones (Grade 1), Understanding tens (Grade 1)
column
From Grade 1
Things one above another, top to bottom.
Learn it in: Numbers to 100 (Grade 1), Addition within 1,000 (Grade 2), Regrouping in addition (Grade 2)
hundred
From Grade 1
Ten tens, written 100.
Learn it in: Numbers to 100 (Grade 1), Counting hundreds (Grade 2)
hundred chart
From Grade 1
A grid of numbers from 1 to 100 in rows of ten.
Learn it in: Numbers to 100 (Grade 1)
row
From Grade 1
Things side by side, left to right.
Learn it in: Numbers to 100 (Grade 1), Picture graphs (Grade 1), Arrays (Grade 2)
ones
From Grade 1
Single things. The ones digit shows how many.
Learn it in: Tens and ones (Grade 1), Grouping objects into tens (Grade 1), Understanding ones (Grade 1)
place
From Grade 1
The position of a digit in a number.
Learn it in: Tens and ones (Grade 1), Understanding ones (Grade 1), Numbers to 1,000 (Grade 2)
leftover
From Grade 1
Fewer than ten that remain.
Learn it in: Grouping objects into tens (Grade 1), Division using objects (Grade 2)
value
From Grade 1
How much a digit is worth.
Learn it in: Understanding ones (Grade 1), Recognising local coins and notes (Grade 1), Counting money (Grade 2)
place value
From Grade 1
The value of a digit because of where it is.
Full explanation with examples and practice →
Learn it in: Understanding tens (Grade 1), Hundreds, tens and ones (Grade 2), Expanded form (Grade 2)
value of a digit
From Grade 1
How much a digit is worth.
Full explanation with examples and practice →
Learn it in: Understanding tens (Grade 1)
model
From Grade 1
A picture or objects that stand for a number.
Learn it in: Representing two-digit numbers (Grade 1), Mathematical modelling (Grade 6)
represent
From Grade 1
Show a number in a picture, a model or words.
Learn it in: Representing two-digit numbers (Grade 1)
two-digit number
From Grade 1
A number with a tens digit and a ones digit.
Learn it in: Representing two-digit numbers (Grade 1)
compare
From Grade 1
Look at two numbers to see which is bigger or smaller.
Learn it in: Comparing two-digit numbers (Grade 1), Comparing lengths (Grade 1), Reviewing numbers to 100 (Grade 2)
equal
From Grade 1
The same.
Learn it in: Comparing two-digit numbers (Grade 1), Squares (Grade 1), Equal groups (Grade 2)
ascending
From Grade 1
From smallest to greatest.
Learn it in: Ordering numbers (Grade 1), Ordering numbers (Grade 2), Ordering numbers (Grade 3)
descending
From Grade 1
From greatest to smallest.
Learn it in: Ordering numbers (Grade 1), Ordering numbers (Grade 2), Ordering numbers (Grade 3)
Grade 2
hundreds
From Grade 2
Groups of one hundred.
Learn it in: Counting hundreds (Grade 2), Hundreds, tens and ones (Grade 2), Addition within 1,000 (Grade 2)
thousand
From Grade 2
Ten hundreds. Written 1,000.
Learn it in: Counting hundreds (Grade 2), Numbers to 10,000 (Grade 3), Numbers to 100,000 (Grade 4)
in words
From Grade 2
Written with letters.
Learn it in: Numbers to 1,000 (Grade 2), Numbers to 10,000 (Grade 3)
expanded form
From Grade 2
A number written as the sum of its place values.
Learn it in: Expanded form (Grade 2), Expanded form (Grade 3), Expanded form (Grade 5)
standard form
From Grade 2
The usual way to write a number, like 345.
Learn it in: Expanded form (Grade 2), Expanded form (Grade 3), Expanded notation (Grade 4)
equal to
From Grade 2
The same. Sign: =.
Learn it in: Comparing three-digit numbers (Grade 2), Comparing numbers (Grade 3), Comparing large numbers (Grade 4)
even
From Grade 2
Can be put in pairs with none left over.
Learn it in: Odd and even numbers (Grade 2), Prime numbers (Grade 4)
odd
From Grade 2
Has one left over when put in pairs.
Learn it in: Odd and even numbers (Grade 2), Prime numbers (Grade 4)
Grade 3
nearest ten
From Grade 3
The closest multiple of 10.
Learn it in: Rounding to the nearest ten (Grade 3)
round down
From Grade 3
Stay on the lower ten.
Full explanation with examples and practice →
Learn it in: Rounding to the nearest ten (Grade 3), Rounding to the nearest hundred (Grade 3)
round up
From Grade 3
Go to the next ten.
Full explanation with examples and practice →
Learn it in: Rounding to the nearest ten (Grade 3), Rounding to the nearest hundred (Grade 3)
nearest hundred
From Grade 3
The closest multiple of 100.
Learn it in: Rounding to the nearest hundred (Grade 3)
term
From Grade 3
One number in a pattern.
Learn it in: Number patterns (Grade 3), Number patterns (Grade 4), Number patterns (Grade 5)
Grade 4
period
From Grade 4
A group of three digits.
Learn it in: Numbers to 100,000 (Grade 4), Large whole numbers (Grade 5), Large whole numbers (Grade 6)
million
From Grade 4
1,000,000, one thousand thousands.
Learn it in: Numbers beyond 100,000 (Grade 4), Large whole numbers (Grade 5), Large whole numbers (Grade 6)
six-digit number
From Grade 4
A number from 100,000 to 999,999.
Learn it in: Numbers beyond 100,000 (Grade 4)
digit value
From Grade 4
Digit times the place.
Learn it in: Place value (Grade 4), Place-value review (Grade 6)
expanded notation
From Grade 4
A number written as a sum of place values.
Learn it in: Expanded notation (Grade 4)
greatest
From Grade 4
The biggest.
Learn it in: Ordering large numbers (Grade 4), Ordering fractions (Grade 4)
nearest
From Grade 4
Closest.
Learn it in: Rounding (Grade 4), Rounding (Grade 5), Rounding decimals (Grade 5)
rounding place
From Grade 4
The digit we round to.
Learn it in: Rounding (Grade 4), Rounding (Grade 5), Rounding decimals (Grade 5)
divisible
From Grade 4
Can be divided with no remainder.
Learn it in: Understanding factors (Grade 4), Understanding multiples (Grade 4)
common multiple
From Grade 4
A multiple shared by two numbers.
Learn it in: Understanding multiples (Grade 4), Least common multiple (Grade 6)
prime number
From Grade 4
Has exactly two factors: 1 and itself.
Learn it in: Prime numbers (Grade 4), Composite numbers (Grade 4)
Grade 5
base
From Grade 5
The number multiplied.
Learn it in: Powers of ten (Grade 5), Area of triangles (Grade 6), Area of parallelograms (Grade 6)
evaluate
From Grade 5
Find the value.
Learn it in: Numerical expressions (Grade 5), Order of operations (Grade 5), Order of operations (Grade 5)
expression
From Grade 5
Numbers and operations without =.
Learn it in: Numerical expressions (Grade 5), Numerical expressions (Grade 5), Algebraic expressions (Grade 6)
parentheses
From Grade 5
Brackets that group.
Learn it in: Numerical expressions (Grade 5), Order of operations (Grade 5), Order of operations (Grade 5)
Grade 6
composite
From Grade 6
More than two factors.
Learn it in: Factors and multiples (Grade 6), Area of composite figures (Grade 6)
GCF
From Grade 6
Greatest common factor.
Learn it in: Greatest common factor (Grade 6), Fraction simplification (Grade 6)
integer
From Grade 6
Whole number, positive, negative or zero.
Learn it in: Introduction to integers (Grade 6), Secondary mathematics readiness (Grade 6)
negative
From Grade 6
Less than zero.
Learn it in: Introduction to integers (Grade 6), Positive and negative numbers (Grade 6)
positive
From Grade 6
Greater than zero.
Learn it in: Introduction to integers (Grade 6), Positive and negative numbers (Grade 6)
quantity
From Grade 6
An amount.
Learn it in: Understanding ratios (Grade 6), Finding percentages of quantities (Grade 6)
ratio
From Grade 6
Comparison of two quantities.
Learn it in: Understanding ratios (Grade 6), Ratio word problems (Grade 6)
rate
From Grade 6
Ratio with different units.
Learn it in: Unit rates (Grade 6), Mathematical modelling (Grade 6)
speed
From Grade 6
Distance per time.
Learn it in: Unit rates (Grade 6), Real-world applications (Grade 6)