Math Vocabulary (Properties)

Question 1

Mixed number

Answer 1

a number consisting of an integer and a proper fraction. Example: 5 ¾.

Question 2

Commutative property

Answer 2

numbers on which we operate can be swapped from their position without making any difference to the answer.

Question 3

Reciprocal

Answer 3

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.
Example: 7 is the number and 1/7 is the reciprocal.

Question 4

Compatible numbers

Answer 4

the numbers that are easy or compatible. It means the numbers are easy to add, subtract, multiply, or divide. Example: 500 and 300.

Question 5

Unit fraction

Answer 5

a fraction whose numerator is 1. Example: ½.

Question 6

Improper fraction

Answer 6

a fraction in which the numerator is greater than the denominator. Example: 5/4.

Question 7

Proper fraction

Answer 7

a fraction where the numerator is less than the denominator. Example: 2/3, 1/6, 10/100.

Question 8

Row

Answer 8

a horizontal (left to right) arrangement of objects in an array.

Question 9

Column

Answer 9

a vertical (up/down) arrangement of objects in an array.

Question 10

Area

Answer 10

the total space taken up by a flat (2D) surface or shape of an object (the amount of surface a figure covers).

Question 11

Inverse operations

Answer 11

two operations which are exactly opposite. One undoes the action of the other. Example: if we add 5 and 2 pens, we get 7 pens. Now subtract 7 pens and 2 pens and we get 5.

Question 12

Unit ratio

Answer 12

a 2-term ratio expressed with a second term of one. Example: if you ran 70 yards in 10 seconds, you ran an average of 7 yards in 1 second.

Question 13

Simplest form

Answer 13

a fraction is in simplest form if the top and bottom have no common factors other than 1. You cannot divide the top and bottom any further.

Question 14

Dimensional analysis

Answer 14

analysis using the fact that physical quantities added to or equated with each other must be expressed in terms of the same fundamental quantities (such as mass, length, or time). Example: converting units of measurement.

Question 15

Scaling

Answer 15

drawing an object that is proportional to the actual size of the object.

Question 16

Numerator

Answer 16

a part of the fraction that is above the line and signifies the number to be divided by the denominator.

Question 17

Denominator

Answer 17

the number below the line in a common fraction; the divisor.

Question 18

If 9 is the number then 1/9 is the ________ .

Answer 18

Reciprocal.

Question 19

1/4 is an example of a/an ______ fraction.

Answer 19

Unit.

Question 20

9/5 is an example of a/an __________ fraction.

Answer 20

Improper.

Question 21

200 and 400 are _______ numbers.

Answer 21

Compatible.

Question 22

3/4 and 1/3 are examples of _______ fractions.

Answer 22

Proper.

Question 23

9 2/3 is an example of a ___________ number.

Answer 23

Mixed.

Question 24

12 + 6 = 18 then 18-6 = 12. This is the principle of _______ operations.

Answer 24

Inverse.

Question 25

5 push-ups in 10 seconds is an example of _____ ratio.

Answer 25

Unit.

Question 26

The 1 in 1/3 is the _____.

Answer 26

Numerator.

Question 27

The 5 in 3/5 is the ________.

Answer 27

Denominator.