Mathematics Trimester 1 Flashcards
to compare decimals you…
align the . points then compare place then
In math, always go…
Left to Right
Round _____
values
Front end estimation:
add the front digits, adjust the estimate by using the remaining digits
Numerical Expression:
a phrase with only numbers and operation
word phrase:
ex) sum of 12+2
variable:
a symbol that represents numbers (#s anything)
Evaluating:
replacing te variable with the given value
Estimating Products:
round the factor
X the factors
Count the 0s in the factors
Exponent:
to the power ex) normal 2, small 5 = 2 to the 5th power
Short division:
normal divis X/- mentally record remainder put it on top rinse and repeat
Compatible Numbers:
2 numbers that evenly divide each other ( 18 and 3)
Evaluate=
find value
substitution:
replace a number
How to Evaluate:
expression
substitute
Term:
the parts of an expression
Like Term:
terms that have exactly the same variable parts
Equation:
a statement showing that 2 mathematical expressions are equal (=)
Closed Equation:
equation with no variables
Open Equation:
Equation with variables
Inequality:
a statement that uses symbols
<:
less than
> :
greater than
>
: _
greater than or equal to
