A to ZA to ZMath BookMath Book

A to ZA to ZMath BookMath Book

Create by Nicolette SweeneyCreate by Nicolette Sweeney

Array

A set of objects or numbers arranged in rows and columns

Pablo set up an array of apples by lining them up in three rows and three columns.

BaseThe bottom line of a shape or bottom face of a solid

If the base of my toy box was not on the floor, all the toys would fall

out!

Circumference

Distance around a circle

The circumference of a quarter is greater than the circumference of a

dime.

DeductTo subtract

$5.00-$2.00= $ 3.00

My mom says if I forget to take out the trash one more time, she will

deduct $2.00 from my allowance!

- =

Estimate

An approximate calculation, often based on rounding

Our teacher says that if our estimate of how many jelly beans are in the jar is close to the actual number, we can eat

them!

Fraction

A part of a whole

Since I have two hungry brothers, I know I will only get a small

fraction of the pizza when it arrives!

Graph

Diagram used to record information

When I saw the bar graph, it was easy to see that seven of my classmates

have dogs.

Hemisphere

Half of a sphere

The United States is located in the Northern Hemisphere of the

Earth.

Isosceles Triangle

A triangle with two equal sides and two equal angles

The head of an arrow is an isosceles triangle.

Jump StrategyBreaking down an addition or

subtraction problem into smaller numbers

17+31

0 10 20 30 40 50

17 27 37 47 48

+10 +10 +10 +1

Tommy solved the difficult addition problem by using the jump strategy.

Kilogram

Standard metric unit for measuring weight

At football practice, Austin weighed in at 63 Kilograms.

Less

Not as many as

< 8 cookies

I counted my cookies and realized that I had 2 less than my brother

did.

Median

The middle number in a set of ordered values

14 25 39 46 79 103 110

Finding the median of a set of numbers is much simpler when you

order the numbers from least to greatest first!

Numerator

The number above the line of a fraction that shows the number of

parts of the whole

Numerator

Denominator

1

2

3

5

Mom broke the cookie in two pieces and gave me one-half. When I write the fraction one-half, the number “1” is the numerator because it goes above the

line.

Octagon

A polygon with 8 sides

When I count the sides of a stop sign, I know it is an octagon because it has

eight sides!

Polygon

A plane shape that has three or more sides

You can identify a polygon by counting it’s number of sides.

QuotientThe number resulting from

dividing one number by another

4 2 2/ =Alex and I bought a pizza with 4 slices, we divided it in half

and got a quotient of 2 slices each.

Ray

A line that has a starting point but no ending point

The Sun’s rays heat up the Earth.

SphereA three-dimensional solid that is perfectly

round

When Johnny kicks the soccer ball around, he is playing with a

sphere.

Total

The sum or result of adding

3 + 4 = 7

Addend + Addend = Total

My sister picked 3 tomatoes and I picked 4. We picked a total of 7

tomatoes.

UnequalNot equal in amount

=

==

When we counted the money in our wallets, it was easy to see the amounts

were unequal.

Venn DiagramA diagram that shows

the relationship between sets

Students who have a pet dog

Students who have a pet cat

Susie

Joy

Branden

Alex

Carl

Joey

Jen

Linda

Nikki

Austin

Cynthia

Evolet

Since I have a cat and a dog, my name is in the middle of the Venn diagram.

WidthDistance across from side to

side

Johnny grew in width, so he had to buy new pants!

X- axisThe horizontal line on a

graph

X-axis

The x-axis in the above graph shows which pet students have.

Y-axis

Y-axisThe vertical line on a graph

The y-axis on the above graph shows how many students have each pet.

Zero

A numeral which indicates “none”

Madison was upset because she had zero cookies!