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

7 – 12 = | -5 |

-8 + 15 = | 7 |

-10 – 11 = | -21 |

-12 + (-20) = | -32 |

-5(10) = | -50 |

-20(-4) = | 80 |

-25/5 = | -5 |

10/(-10) = | -1 |

(-15)/(-3) = | 5 |

0/(-2) = | 0 |

# Month: January 2018

Term | Definition |
---|---|

acute triangle | an acute triangle is a triangle with three acute triangles |

cube root | It is used to denote the cube root. |

hypotenuse | A right triangle that is opposite of the right angle. |

irrational number | A number that cannot be written as a quotient of two integers where the denominator is not 0. |

Legs | The sides of a right triangle that are adjacent to the right angle. The signs labeled a and b are legs |

obtuse triangle | An obtuse triangle has one with one measure greater than 90 degrees. |

perpendicular | The sides of a right triangle that form the right angle are perpendicular. |

terminating decimals | A decimal that ends, or terminates. Terminating decimals are rational numbers. |

theorem | A theorem is a general mathematical statement that has been proven true. |

square root | The side length of a square that has that number as its area. |

Right triangle | A right triangle is a triangle with one right triangle. |

Repeating decimal | A decimal with a pattern of a fixed number of digits that repeats forever. |

real numbers | The set of all rational numbers and all irrational numbers. |

rational number | A number that can be written as a quotient of two integers where the denominator is not 0. |

Radius | A radius of a circle is the distance from the center of the center of the circle to any point on the circle. |

pythagorean Theorem | A statement about the relationship among the lengths of the sides of a right triangle. |

Term | Definition |
---|---|

Gradient of straight line | Steepness or slope |

General equation of straight line | y = mx + c |

m | Coefficient of x; value of gradient |

c | Constant term; value of y-intercept |

distance between two points | The absolute value of the difference of the coordinates of the points. |

mid-point | a point equidistant from the ends of a line or the extremities of a figure |

gradient | A difference in concentration, pressure, or electrical charge between two regions. |

parallel | Phrases or sentences of a similar construction/meaning placed side by side, balancing each other |

perpendicular | At an angle of 90? to a given line, plane, or surface. |

y-intercept | The Y-coordinate of the point where the line crosses the y-axis. (Y,0) |

x-intercept | The coordinate at which a graph intersects the x-axis. The X-coordinate of the point where a line crosses the x-axis (X.0) |

Straight lines with positive gradient | / |

Straight lines with negative gradient | |

What is a straight line? | A straight line is a set of points with no definite starting point or end point |

What is a line segment? | It is a set of points with a definite start and end point |

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

What word means equal groups of or repeated addition? | multiply |

What word means the number that you count by or skip count by? | count by |

Which number in the multiplication equation 5 x7 is the count by number? | 7 |

What is the answer to a multiplication question? | product |

What word is a mathematical sentence with an equal sign? | equation |

What word is the first number in a multiplication equation and tells you how many times to skip count? | multiplier |

Term | Definition |
---|---|

Real Numbers | Set of Rational and Irrational Numbers |

Rational Numbers | Any number that can be written in the form a/b , where a and b are integers, and b is not zero. |

Terminating Decimals | has a finite number of digits. |

Repeating Decimals | block of one or more digits that repeat indefinitely. |

Whole Numbers | Positive numbers without a fraction or decimal, including zeros. |

Integers | The set of whole numbers and their opposites |

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

v25 | 5 |

v49 | 7 |

v81 | 9 |

v16 | 4 |

v64 | 8 |

v100 | 10 |

v36 | 6 |

v50 | 7.1 |

v37 | 6.1 |

v65 | 8.1 |

v17 | 4.1 |

v5 | 2.2 |

v8 | 2.8 |

v24 | 4.9 |

v63 | 7.9 |

v80 | 8.9 |

v99 | 9.9 |

v90 | 9.5 |

v30 | 5.5 |

v42 | 6.5 |

v2 | 1.4 |

Term | Definition |
---|---|

Area | The number of square units needed to cover a given surface |

Trapezoid | A quadrilateral with exactly one pair of parallel sides |

Perimeter | The distance around a polygon |

Circumference | The distance around a circle |

Surface Area | The sum of the areas of the faces or surfaces of a three-dimensional figure |

Prism | A polyhedron that has two congruent polygon shaped bases and other faces that are parallelograms |

Volume | The number of cubic units needed to fill a given space |

Parallelogram | A quadrilateral with two pairs of parallel sides |

Diameter | A line segment that passes through the center of a circle and has end-points on the circle or the length of that segment |

Radius | A line segment with one end-point at the center of a circle and the other end-point on the circle or that length of the segment |

area of a rectangle | length x width |

area of a parallelogram | base x height |

area of a trapezium | ((a +b) x h)/2 |

area of a circle | 3.142 x radius x radius |

Area of a triangle | A = (b x h) divided by 2 |

Circumference of circle | Pi x d |

Perimeter of a rectangle (and parallelograms) | A = 2(L x W) |

Triangle Area = | 1/2 x base x perpendicular height |

Square Area = | base x base |

Rectangle Area = | base x height |

Parallelogram Area = | base x perpendicular height |

Trapezium Area = | 1/2 x height x (top + bottom) |

Circle Area = | ? x r squared |

Area (rhombus) | bxh |

Acute Triangle | A triangle with 3 acute angles |

Right Triangle | A triangle that has a 90 degree angle (right angle) |

Obtuse Triangle | A triangle with one angle that is greater than 90 degrees. |

Square | Four equal sides and four right angles |

Rhombus | A parallelogram with four equal sides |

Trapezoid(US)/Trapezium(UK) | A quadrilateral with exactly one pair of parallel sides |

Pentagon | 5 sided polygon |

Octagon | 8-sided polygon |

Nonagon | 9 sided polygon |

Decagon | 10 sided polygon |

Heptagon | 7 sided polygon |

Hexagon | 6 sided polygon |

Term | Definition |
---|---|

Rectangle | Area = lw Perimeter = 2l + 2w |

Square | Area = 4s Perimeter = s^2 |

Parallelogram | Area = bh Perimeter = 2(b + a) |

Rhombus | Area = bh Perimeter = 4b |

Triangle | Area = (1/2)bh Perimeter = a + b + c |

Kite | Area = (1/2)d1d2 Perimeter = a + b + c + d |

Trapezoid | Area = (1/2)h(b1 + b2) Perimeter = 2a + b1 + b2 |

Circumference of circle | c=?•d |

Area of square | a=s^2 |

Area of rectangle | A=l•w |

Area of triangle | A=l•w/2 |

Area of parallelogram/rhombus | A=b•h |

Area of trapezoid | A=(b1+b2)/h |

Area of circle | A=?r^2 |

Perimeter of square | P=s•4 |

Perimeter of rectangle | P=l+w+l+w |

Perimeter of quadrilateral | s+s+s+s |

Segment | Area of sector-area of triangle |

Regular Polygon | ?Pa |

Sector | x/360??r? |

Perimeter | Distance around a shape. |

Area | Number of square units used to fill up a shape. |