## Geometry

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 ...
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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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

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