Page 462 - Math Smart - 7

VOCABULARY LIST

Unit1 Negative number: A number that is smaller Commutative property: Two numbers
Ascending order: Arrange from lowest to than zero can be added or multiplied in either order;
highest or smallest to greatest Number line: A horizontal or vertical line on changing the order of the operators does not
Composite number: A number with more which whole numbers, decimals and fractions change the result, for example, a x h = h x a
than two factors; It is the opposite of a prime are marked at intervals Decimal point: A dot used to separate the
number Positive number: A number that Is greater whole number part from the fractional part of
Descending order: Arrange from highest to than zero a number
lowest or greatest to smallest Whole numbers: The number zero and all Decimal system: A Base-10 number system
Dividend: The number that is being divided positive numbers that uses ten digits to represent all numbers,
by another number using place value, a decimal point to separate
whole numbers from decimal fractions
Divisibility test: A rule for determining Unit 3
whether one whole number is divisible by Algebra: A branch of mathematics that Decimals: Numbers that are written using a
another whole number, known as the divisor, represents variables using letters and decimal point to indicate the fractional portion
by examining the digits of the dividend. symbols of the number
Expanded form: A number shown as the sum
Divisor; The number that divides another Algebraic equation: A mathematical
of the values of its digits
number statement that Includes variables, constants,
Factor Tree: A method used to find the prime operation signs, brackets and an equal sign Place value: The value of a digit according to
factors of a number using diagrams to show that the expression on the left-hand its place in the number
Factor: A number when multiplied with side equals to the expression on the right- Rounding: Making an approximation of a
another gives another number, for example, 2 hand side number, given a specific accuracy to round to
X 3 = 6 so 2 is a factor of 6 Algebraic expression: One or a group Undefined: A mathematical result that has no
Highest Common Factor (HCF): The of terms made up of variables, constants, meaning
greatest number that divides exactly two or operation signs and can include brackets; it
has no equal sign
more numbers Unit 5
Inverse operation: Opposite operation, the Coefficient: A number that multiplies the Convert: Change something into a different
operation that reverses the effect of another variable: it is the numerical part of a term, form, in this case, changing the units of
usually written before the variable
operation measurement
Lowest Common Multiple (LCM): The Constant: A quantity of a fixed value written Estimate: The rough calculation of something
smallest number (not zero) that is a multiple as a number; it does not vary in value
Interval: Numbers between two given
of two or more numbers Evaluate: Substitute the value{s) given
numbers
Multiple: A number that we get after for each variable to find the value(s) of an Metric system: An international decimal
multiplying the number by a positive whole expression
system of weights and measures, based on
number, for example, 2x3 = 6 so 6 Is a Expand: Multiply each term inside a pair of
the 7 base units: metre, kilogram, second,
multiple of 6 brackets by the term outside the bracket
ampere, Kelvin, mole and candela
Prime number: A natural number with only Formula: A mathematical statement that
Odometer: An instrument for measuring
two factors, 1 and the number itself describes a relationship between two or more
distance travelled
quantities
Product; The result obtained when two or
Pedometer: An instrument for measuring
more numbers are multiplied Function: The relationship between two
distance travelled by foot by recording the
Sieve of Eratosthenes: A method of finding variables in which each value of the first number of steps taken
prime numbers variable corresponds to exactly one value of
Prefix: Letters added to the beginning of a
the other variable in the statement
Square number: The product obtained when word to indicate the size of a unit with respect
a whole number is multiplied by itself Like terms: Terms that have the same to the base unit
variable part but can have different
Square root: A value that can be multiplied Speedometer: An instrument for indicating
coefficients
by itself to give that certain number how fast a vehicle is moving
Mapping diagram: A diagram that shows the
input and output values of a function
Unit 2 Unit 6
Simplify: Group like terms
Additive inverse: The number added to, or Acute angle: An angle that measures less
Term: One part of an expression which can
subtracted from, another number to get an than 90°
be a number, a variable or a product of both
answer of zero (0)
Adjacent angles: Angles that have a
Unlike terms: Terms that do not have the
Directed numbers: Numbers that have a size common vertex and side
same variable part
and a direction that could be positive (+) or Complementary angles: Angles that add up
negative (-) Variable: A quantity that can take on different to 90°
values, and is usually denoted by a letter or
Integers: A set of natural numbers and its Diagonal: A line from one vertex of a polygon
symbol
negative counterpart, and zero, for example, to another vertex on the opposite side
...-3, -2,-1,0,1,2, 3...
Inner scale (of a protractor): The inner set
Unit 4
Minimum: Lowest or smallest value in a set
of reading that measures in an anti-clockwise
of values Approximate: To give a number close to the direction from 0° on the right-hand side to
true value
180° on the left-hand side