Math- T1 GK Flashcards
what can an integer be?
an integer can be positive, negative or zero
-2+3=?
?=1
-16+21=?
?=4
-3.5 is an integer; true or false?
false; integers must be a whole number
if we draw a cartesian plane, which quadrent does it start on (e.g bottom-left)
top-left
which way does it go if we want the order 1-4 of a cartesian plane? (clockwise or anti-clockwise)
anti-clockwise
what does coefficient mean?
a coefficient is the number before an algebraic term; it tells us how many terms we have
what is an algebraic term?
an algebraic term forms a part of an algebraic expression
what is a constant term?
a constant term can be positive, decimal, negative or fraction; it’s a number without any algebra
what is a pronumeral?
pronumeral stands for a value but the value could change
what is a like term?
same terms are like terms; you can combine like terms into one term
what is equivalent to X+X+X to?
Xx3; simpified into 3X
what is an example of a coefficient?
answer must be something like: 7u+5v-3w
what does the equation 7u+5v-3w tell us?
that we have 7 lots of u, 5 lots of v and -3 lots of w
what does factorising mean?
factorising is the opposite procedure to expanding
what do we do to factorise?
when factorising an expression, we always want to TAKE OUT the hcf
define ratios
ratios are one thing compared to the amount of another
define rates
a rate is a way of comparing two related quantities that are measured in different units
what is an equivalent ratio to 174:298?
87:149
what does a rate tell us?
a rate tells us how much of one thing is happening in relation to another
when writing the scale on a drawing what is the order?
drawing length : actual length
what does the drawing length represent?
drawing length represents the length on the diagram, map or model
what does the actual length represent?
actual length represents the real length of the object
what is the golden ratio?
It is the ratio of a line divided into two parts where the longer part divided by the shorter part equals the whole length divided by the longer part
what represents the golden ratio?
the greek letter PHI which is approximately 1.618
