Enduring Skill(s): Develop fluency with fraction operations of addition/subtraction
Understandings
5.NF.2
Grade 5
No Mastery
Does not use any
strategy to attempt to
solve word problems
involving addition and
subtraction of
fractions with unlike
denominators
Partial Mastery
Attempts to use
equivalent fractions to
solve word problems
involving addition and
subtraction of
fractions with unlike
denominators but uses
incorrect equivalent
fractions OR
incorrectly uses visual
fractions
Approaching Mastery
Attempts to solves
word problems
involving addition and
subtraction of
fractions, using
equivalent fractions in
cases of unlike
denominators by using
visual fractions or
equations with
computation error
Mastery
Solves word problems
involving addition and
subtraction of
fractions, using
equivalent fractions in
cases of unlike
denominators by using
visual fractions or
equations
Exceeding Mastery
Creates word
problems involving
addition and
subtraction of
fractions, using
equivalent fractions in
cases of unlike
denominators by using
visual fractions or
equations.
Does not recognize if
an answer is
reasonable or
unreasonable.
Attempts to recognize
the reasonableness of
an answer using
benchmark fractions,
but uses incorrect
estimation strategy.
Attempts to
add/subtract fractions
and/or mixed
numbers but uses
incorrect equivalent
fractions
Understands the
process of estimation
using benchmark
fractions but contains
miscalculation.
Recognizes
reasonableness of
answer using
benchmark fractions
Shows and explains
reasonableness of
answer using
benchmark fractions
Attempts to use
equivalent fractions to
add/subtract fractions
and/or mixed with
unlike denominators
with computation
error
Uses equivalent
fractions to
add/subtract fractions
and/or mixed
numbers with unlike
denominators
Uses most efficient
common denominator
(LCM) to find
equivalent fractions to
add/subtract fractions
and/or mixed
numbers with unlike
denominators
Constructs and
communicates an
incomplete written
response or illogical
progression of steps.
Constructs and
communicates a
complete written
response or logical but
incomplete progression
of steps.
Constructs and
communicates a wellorganized and complete
written response using a
logical progression of
steps.
Constructs and
communicates a
complete written
response using an
efficient and logical
progression of steps.
Strategies, Reasoning,
& Procedures
5.NF.1
Uses irrelevant
strategy to attempt to
add and subtract
fractions with unlike
denominators with no
attempt at an
equivalent fraction
Communication
5.NF.2
Constructs and
communicates no written
response and no
progression of steps.
updated 6/3/2015
During the _________________ school year, _____% of my 5th grade students in _______________ class will improve their fluency with
fractions operations of addition and subtraction. Each student will improve by at least ___ indicator(s) on the Addition and
Subtraction of Fractions Enduring Skill Rubric. In addition, _____% of my students will perform at the mastery level on the
rubric by the end of the year.
Favorite Sports
Sophia asked the students in her class to name their favorite sport. She made this list to display the results.

1

1

5

3
8
of the students named basketball
of the students named soccer
12
of the students named football
The rest of the students in the class named baseball
Part A: Determine the fraction of students who named basketball, soccer, and football as their favorite sport. Show your work
and explain your answer.
Part B: Determine the fraction of students who named baseball as their favorite sport. Show your work and explain your
answer.
Part C: Estimate the difference between the fraction of students who named football and basketball as their favorite sport.
Show your work and explain your answer.
_________________________________________________________________________________________________________________________________________________
Solve:
2
7
8
1
Show any work here:
3
12
- = __________________
3
4
+ = ____________________
4