Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# 7th grade part 2 km

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

Question | Answer |
---|---|

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
on 2008-10-19