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Everyday Math Gr 4 Unit 6
Vocabulary for grade 4 Everyday Math Unit 6
18
Mathematics
4th Grade
01/11/2012

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Term
acute angle
Definition
An angle with a measure greater than 0° and less than 90°.
Term
coordinate grid
Definition
A reference frame for locating points in a plane using ordered number pairs, or coordinates
Term
equal-groups notation
Definition
A way to denote a number of equal-sized groups. The size of the group is written inside square brackets and the number of groups is written in front of the bracket. 3[6s] means 3 groups of 6.
Term
index of location
Definition
A list of places together with a reference frame for locating them on a map.
Term
meridian bar
Definition
A device on a globe that shows degrees of latitude north and south of the equator
Term
multiplication/division diagram
Definition
A diagram used for problems in which a total is made up of several groups. The diagram has three parts; a number of groups, a number in each group, and a total number.
Term
obtuse angle
Definition
An angle with a measure greater than 90° and less than 180°.
Term
ordered number pair
Definition
Two numbers that are used to locate a point on a coordinate grid. The 1st # shows the horizontal axis, the 2nd # shows the vertical axis.
Term
protractor
Definition
A tool used for measuring or drawing angles.
Term
quotient
Definition
The result of dividing one number by another number.
Term
reflex angle
Definition
An angle with a measure greater than 180° and less than 360°.
Term
straight angle
Definition
An angle with a measure of 180°.
Term
vertex
Definition
The point at which the rays of an angle, the sides of a polygon, or the edges of a polyhedron meet.
Term
division
Definition
To break down a group or object into equal parts, the opposite of multiplication.
Term
divisor
Definition
The number in division that divides another number.
Term
dividend
Definition
The number in division that is being divided.
Term
remainder
Definition
An amount left over when one number is divided by another number.
Term
product
Definition
The result of multiplying two numbers(factors).
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