Add & Sub
rearrange numbers into groups based on place value
Regroup
a collection of items arranged in equal rows or columns
Array
the answer to a division problem
Quotient
the area of a square that has side lengths of 1 unit
unit square
an imaginary line that divides a shape or object into two identical halves.
Line of Symmetry
a line with equally-spaced markings to show numbers
Number Line
also known as repeated addition
Multiplication
the value of a digit based on its location in a number
Place Value
To find the length, height, or weight of an object.
Measure
a parallelogram with four equal sides and four right angles
square
a number used in an addition sentence like 23 + 64
addend
a number that is used in a multiplication sentence like 3 x 2
when you divide a shape into equal parts; another word for "divide"
Partition
shapes or numbers that repeat by following a rule
Pattern
a shape that has five sides
Pentagon
the answer in an addition problem
Sum
the space INSIDE a shape
Area
a guess that is close to the original amount
Estimate
a ______________ stick has 36 inches
Yard
Rhombus
the answer in a subtraction problem
Difference
the answer to a multiplication problem
a number that ends with 0, 2, 4, 6, or 8 in the ones place
even number
a number that ends with 1, 3, 5, 7, or 9 in the ones place
a four-sided shape
quadrilateral