Name_________________________________________________________
CCSS
6.EE.2
Date __________
Geometry
1. Write each phrase as an expression and state what the expression
represents.
a. the product of the length
and the width w
b. the sum of twice the length
and twice the width w
c. 6 multiplied by the square of the side length s
2. Find the perimeter and area of the base of the treasure chest.
2 ft
2 ft
3 ft
3. Can you use the expression from part (c) in Exercise 1 to find the surface
area of the treasure chest in Exercise 2? Explain.
4. One cubic inch of sand weighs about 1 ounce. Find the weight of the
treasure chest (in pounds) after it is filled with sand. Assume that the chest
weighs 20 pounds when empty.
20 in.
20 in.
20
2
0 in.
in
n.
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Big Ideas Math
Performance Tasks
3
CCSS
6.EE.2
Common Core State Standard
6.EE.2 Write, read, and evaluate expressions in which letters stand for numbers.
a. Write expressions that record operations with numbers and with
letters standing for numbers.
b. Identify parts of an expression using mathematical terms (sum, term,
product, factor, quotient, coefficient); view one or more parts of an
expression as a single entity.
c. Evaluate expressions at specific values of their variables. Include
expressions that arise from formulas used in real-world problems.
Perform arithmetic operations, including those involving whole
number exponents, in the conventional order when there are no
parentheses to specify a particular order (Order of Operations).
CCSS
6.EE.2
Grading Rubric
Answers
1. a.
Score
w ; area of a rectangle
2
b. 2 + 2 w ; perimeter of a rectangle
2
c. 6 s 2 ; surface area of a cube
2
2. 10 ft; 6 ft 2
2
3. No, it is not a cube.
1
4. 520 lb
Precision
1
1. a. Student indicates multiplication in the expression.
b. Student indicates multiplication and addition in the expression.
1
c. Student uses an exponent in the expression.
1
2. Student follows the order of operations using the expressions from
parts (a) and (b) in Exercise 1.
3. Student uses precise mathematical language when providing an
explanation.
1
1
4. Student multiples the volume by the weight of the sand and adds
the weight of the chest, while paying attention to and converting
units.
Total Points
4
Big Ideas Math
Performance Tasks
2
16
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