Words for students from kindergarten to grade 8, each grade has 4 lists: art, math, science, and social. They are essential vocabulary for elementary academic classes.

**Grade 1: Word List - Math**

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Grade and Subject |

add

determine the sum of

addition a quantity that is added; something added to what you already have

analog clock a clock that displays the time of day by the position of hands on a dial

capacity mental or physical ability; ability to accommodate

certain reliable in operation or effect; having or feeling no doubt

clock a timepiece that shows the time of day

cone a shape whose base is a circle and whose sides taper up to a point

corner position at which two lines, surfaces, or edges meet and form an angle

cylinder a surface generated by rotating a parallel line around a fixed line; a cylindrical container

digit one of the elements that collectively form a system of numeration

digital clock a clock that displays the time of day digitally

double twice as great or many

face confront; encounter; be opposite

fewer than not as many as

figure a diagram or picture illustrating textual material

half-hour 30 minutes

hexagon a six-sided polygon

hour a period of time equal to 1/24th of a day

hour hand the shorter hand of a clock that points to the hours

impossible not capable of occurring or being accomplished or dealt with

large above average in size or number or quantity or magnitude or extent

line plot a graphical display of a set of data where each separate piece of data is shown as a dot or mark above a number line

mass the property of something that is great in magnitude

measure determine the size of something; mark, lay out, or establish dimensions; estimate by evaluation or comparison

medium state that is intermediate between extremes

minus less; requiring to be subtracted; negative

minute a unit of time equal to 60 seconds or 1/60th of an hour

minute hand the hand on a watch or clock that indicates minutes

multi-step involving multiple steps

non-standard not standard; not accepted as a model of excellence

parallelogram a quadrilateral whose opposite sides are both parallel and equal in length

place value the numerical value that a digit has by virtue of its position in a number

plus involving advantage or good; on the positive side or higher end of a scale

prism a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms

rectangular having the shape of a rectangle; having one or more right angles

representation act of representing; standing in for someone or some group and speaking with authority in their behalf

side an extended outer surface of an object

single-step a process in which a program can be performed one instruction

skip count counting by a number that is not 1

small slight or limited; especially in degree or intensity or scope

square rectangular shape

strategy elaborate and systematic plan; plan of action intended to accomplish a specific goal

subtract remove a part from the whole

subtraction reduction; deduction; removing a part from the whole

take away take from a person or place; take out or remove

tallies current score or amount

tally mark unary numeral system used for counting

time a suitable moment

trapezoid a quadrilateral with two parallel sides

unit an assemblage of parts that is regarded as a single entity