MSTAR Practice Worksheet

Lesson 5-6: Represent Three-Dimensional Figures in Two Dimensions

Grade 6 Mathematics · Standard 6.GR.4

Name: Date:

These are MSTAR-style questions written for this curriculum to rehearse the format. They are not official Maryland assessment items. MSTAR — Maryland's new state test, first given in spring 2027 — uses the same kinds of questions you see here: selected response, select-all, two-part evidence questions, and written responses.

Part A — Skills Check

Warm up with the lesson's core skills — one best answer each.

Question 1Selected response · 1 point

A time capsule box is a rectangular prism with l = 6 in, w = 4 in, h = 2 in. What is its surface area?

A44 in²
B48 in²
C88 in²
D88 in³

Question 2Selected response · 1 point

How many faces does a rectangular prism have?

Question 3Selected response · 1 point

Surface area is measured in which type of unit?

ACubic units (in³, cm³, ft³)
BSquare units (in², cm², ft²)
CLinear units (in, cm, ft)
DNo units needed

Question 4Selected response · 1 point

A time capsule box is a cube with edges of 5 cm. What is its surface area?

A30 cm²
B125 cm²
C150 cm²
D150 cm³

Question 5Selected response · 1 point

You unfold a time capsule that is a cube. Its net shows 6 equal squares, and each square has an area of 4 cm². What is the cube's total surface area?

A10 cm²
B12 cm²
C16 cm²
D24 cm²

Question 6Selected response · 1 point

Your team unfolds a rectangular time capsule box into a flat net. How many faces (flat sides) will the net show in all?

Part B — Test-Format Questions

These match the state test's formats: two-part questions, select-all, and written responses.

Question 7Two-part question

Part A

A net folds into a rectangular prism. How many rectangular faces does that net have?

Fill in the bubble next to the one best answer.

Part B

Answer Part A before Part B — Part B asks about your reasoning.

Which statement must be true for a flat pattern to be a valid net of a solid?

AIt must be a single long strip.
BEvery face must be the same size.
CIt folds into the solid with no faces overlapping and none missing.
DIt must contain only triangles.

Question 8Select all that apply

Select ALL statements that are true about nets of three-dimensional figures:

Mark the box next to EVERY answer that is true. More than one is correct.

AA net shows every face of the solid laid flat.
BA triangular prism net has 2 triangles and 3 rectangles.
CThe area of a net equals the surface area of the solid.
DA net may have faces that overlap when folded.
EOne solid can have more than one correct net.

Part C — Show Your Thinking

Answer in writing, the way the state test's constructed responses work.

Question 9Written response · 2 points

Two boxes have the same volume of 60 in³. Box A is 5 × 4 × 3. Box B is 10 × 6 × 1. Which box uses less wrapping paper (has less surface area)? Show your calculations and explain why a more cube-like shape might use less material.

Write your answer in complete sentences. Show or explain your mathematical thinking.