8th Grade Christmas Jeopardy

Geometric Solids

100

The number of congruent bases in a prism

What is two

200

A solid with faces that are polygons

What is a polyhedron

300

The number of edges in a pentahedron pyramid

8

400

The number of faces in a tetrahedron

4

500

The number of vertices in a heptagonal prism

14

Properties

100

a x 0 = 0

Zero Property of Multiplication

200

3 + 4 = 4 + 3

Commutative Property of Addition

300

4 x (2 x 3) = (4 x 2) x 3

Associative Property of Multiplication

400

a x 1/a = 1

Inverse Property of Multiplication

500

x + (-x) = 0

where x is a real number

The Additive Inverse Property of Addition

Probability

100

The probability of an event expressed as a percent. There is an 80% ________ of rain.

Chance

200

A type of probability based on previously found data. Example Sarah sold 8 roast beef sandwiches and only 4 turkey sandwiches. The __________ probability of selling a roast beef sandwich is 2/3.

Experimental Probability

300

The collection of all the possible outcomes of an event.

What is sample space

400

A way of describing the likelihood of an event; the ratio of favorable outcomes to unfavorable outcomes.

The _____ of getting a 3 on a number cube are 1:5.

What is odds.

500

Probability of an outcome that is found by analyzing a situation, usually before it happens.

What is theoretical probability

Like Terms

100

ab + ca + ba

2ba + ca

200

14x^{2 +} 3y - 2x²

12x^{2 +} 3y

300

3(x + 2) - x + 9 

2x + 15

400

3(2x - 1) - 3x - 1

3x - 4

500

-12xy + 2(xy-3) + 7 - 4x + 3yx

-7xy - 4x + 1