Estimating Sums
& Differences
& Differences
Add y and 84
y + 84
6.05 + m when m = 12.68
18.73
Expression
A math problem without an equal sign
18 more than q
q + 18
n - 42.41 when n = 50
7.59
Estimate
To take an educated guess to get an answer close to the actual answer.
Estimate using Front-End Estimation 31.29 + 58.07
What is 30. + 50 = 80
decrease p by 3.2
p - 3.2
Emily has h + 15 minutes of homework. evaluate when h = 20
35
Evaluate
To solve
Juan earns $15.63, $8.95 and $19.82 over a three day period. About how much does he earn?
About $45
Subtract the decimals 20,700.675 - 700.775
What is 19,999.9
Leon has some pieces of paper. He uses 8 pieces. How many does Leon have now?
n-8
3.12 less than v when v = 8.5
5.38
Algebraic Expression
An expression using variables and numbers
Kathleen swims 1.13 mi and bikes 24.8 mi. About how far must she run to complete the final part of a 31.93mi triathlon?
About 6 miles
567.074 + 96.132 + 8.65 =
671.856
Kamal completes 22 math problems on Monday and fewer problems on Tuesday. How many problems does Kamal complete on Tuesday?
22 - p
q + 3.57 - p when q = 7.05 and p= 2.9
7.72
Variable
A letter that takes place of an unknown value