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# 7th grade part 2 km

### Algebraic reasoning, rationals, proportionality, geometry, measurement

An _____ is a mathematical sentence using numbers and variables where both sides are equal. equation
A _____ is a symbol (letter) used to represent a number in mathematical expression/equation. variable
A _____ is the number in front of the variable. coefficient
An equation can be changed and remains equal only when the same operation is done to _____ . both sides
To _____ means to find the value of the variable that makes the statement true. solve an equation
_____ are opposite mathematical operations (one operation undoes the other). Inverse operations
_____ is the inverse operation for addition. Subtraction
_____ is the inverse operation for multiplication. Division
A _____ is a group of objects that have a common attribute. set
_____ are numbers that can be written as a fraction. Rational numbers
The _____ of a fraction is the number being considered out of a whole. It is on the top when written in division form. numerator
The _____ of a fraction is the total number being used to compare (whole). It is on the bottom when written in division form. denominator
A _____ is a number that has a whole number part and a fraction part. mixed number
An ______ is a fraction whose numerator is greater than or equal to its denominator. improper fraction
When _____ : you must first have a common denominator, perform the operation on the numerator and keep the denominator the same. adding and subtracting fractions
When ______ ; you do not need common denominators, multiply the numerators, multiply the denominators and simplify when possible. multiplying fractions
When _____ : Keep the first fraction the same, change the sign to multiply, do the reciprocal of the 2nd fraction then multiply as normal. (keep, change, flip) dividing fractions
A _____ is a common multiple of all the denominators in the problem. common denominator
The _____ of a fraction is that fraction flipped over. reciprocal
To add or subtract decimals, line up the _____ , then add or subtract. decimals vertically
To multiply decimals, line up the _____ from the right and multiply. numbers vertically
To place the decimal in the answer of a multiplication decimals problem, count the number of digits to the _____ of the decimal in the numbers multiplied. The answer should have that many digits to the _____ of the decimal. right
When dividing a decimal by a whole number, move the decimal _____ then divide. straight up
When dividing a decimal by a _____, move the decimal on the outside to the far right, then move the decimal inside to the right the same number of places and then move straight up and divide. decimal
_____ is the number of items per unit. Unit rate
A _____ is the comparision of two numbers that can be written three ways. ratio
To change a _____ divide the numerator by the denominator. fraction to a decimal
To change a _____ put the decimal over the place value. decimal to a fraction
To change _____ move the decimal point two places to the right. decimal to percent
To change _____ move the decimal point two places to the left. percent to decimal
A _____ is when two ratios are equal. proportional relationship
When setting up a proportion, _____ . labels much match
To solve a proportion, _____ . cross multiply and divide
A situation has proportionality if, starting at zero, there is a _____ . constant rate of change
_____ is the part out of 100. Percent
The _____ is the number the original is multiplied by. scale factor
An _____ is a geometric figure made up of two rays or line segments that have the same end point. angle
The point where the two rays meet in an angle is a _____ . vertex
A _____ measures exactly 90 degrees. right angle
A ______ measures exactly 180 degrees. straight angle
An _____ measures less than 90 degrees. acute angle
An _____ measures between 90 and 180 degrees. obtuse angle
Two angles are _____ if the sum of their measures is 90 degrees. complementary
Two angles are _____ if the sum of their measures is 180 degrees. supplementary
_____ angles/sides are located in the same position on similar shapes. Corresponding
Two figures are _____ if they have the same shape and proportional size. similar
Two figures are _____ if they have the same shape and size. congruent
A ______ triangle is a triangle that has no sides congruent. scalene
An _____ triangle is a triangle that has at least two sides congruent. isosceles
An _____ triangle is a triangle that has all three sides congruent. equilateral
A ______ is a quadrilateral with opposite sides parallel and opposite sides congruent. parallelogram
A ______ is a parallelogram with four right angles. rectangle
A _____ is a parallelogram with four contruent sides. rhombus
A _____ is a parallelogram with four right angles and four right sides. square
A _____ is a quadrilateral with exactly one set of parallel sides. trapeziod
_____ is a mirror image across a line of symmetry. Reflection
______ is the sliding of a figure without changing size or direction. Translation
The _____ of an object are the measurements of its edges. dimensions
_____ is the distance around a geometric figure or the sum of all its sides. Perimeter
The perimeter of a circle is called ______ . circumference
On a circle, the _____ is the distance from the center to any point on the circle. radius
The _____ is the distance across a circle through its center. diameter
The diameter of a circle is _____ as its radius. twice as long
__ is used with circle formulas and equals 3.14 or 22/7. Pi
_____ of a figure is the number of square units needed to cover its surface. It is labeled in square units. Area
The _____ of a figure is the perpendicular distance from its base to the opposite side. height
The formula for the _____ is the product of one half its base times its height. A=(b*h)/2 area of a triangle
The _____ is found using the formula: A=pi(r)squared. area of a circle
A _____ is a three dimensional object having parallel and congruent bases. prism
A _____ is a solid that has one base and triangular faces that meet in a point. pyramid
A _____ is the point where the edges of a solid meet. vertex
A _____ is a flat surface on a three dimensional shape. face
An _____ is where two faces connect on a three dimensional shape. edge
A _____ is a two-dimensional representation of a solid. net
_____ is the total area of all faces. Surface area
The _____ is the bottom that is congruent to the top. base of a three dimensional prism
_____ is the number of cubic units needed to fill the space occupied by a solid. Volume
Volume is measured and labeled in _____ units. cubic
To find the _____ multiply the area of the base (B) by the height (h). volume of a prism
The product of a fraction and its reciprocal is _____ . one
Created by: suev503

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