MSTAR Practice Worksheet

Lesson 4-3: Estimate the Percent of a Number

Grade 6 Mathematics · Standard 6.AT.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

Margaret's phone has 6 GB of storage and 4 GB is used. About what percent is used?

AAbout 25%
BAbout 40%
CAbout 70%
DAbout 150%

Question 2Selected response · 1 point

On the double number line for 6 GB, what amount lines up with 25%?

A1.25 GB
B1.5 GB
C2.5 GB
D4 GB

Question 3Selected response · 1 point

Which benchmark percents make good landmarks on a number line?

A0%, 25%, 50%, 75%, 100%
B3%, 17%, 62%, 94%
COnly 50%
DOnly 100%

Question 4Selected response · 1 point

To estimate 8.6% of 216 by rounding, which numbers should you use?

A1% of 216
B8% of 300
C10% of 220
D86% of 216

Question 5Selected response · 1 point

What is 10% of 220?

A2.2
B22
C44
D220

Question 6Selected response · 1 point

The Green-Team recycled 216 pounds; 8.6% was metal. Using compatible numbers 10% and 200, the estimate is:

A2 pounds
B20 pounds
C86 pounds
D208 pounds

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 jacket originally priced at $78.99 is on sale for 25% off. Which is the best estimate of the discount amount?

Fill in the bubble next to the one best answer.

A$8
B$10
C$20
D$40

Part B

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

Which benchmark strategy gives the most accurate estimate in Part A?

ARound 25% to 10% and multiply by $78.99.
BRound $78.99 to $80 and find 1/4 of $80 (half of $80 is $40, and half of $40 is $20).
CRound $78.99 to $100 and subtract 25.
DDivide $78.99 by 25.

Question 8Select all that apply

Select ALL benchmark percent strategies that correctly estimate values:

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

ATo find 10% of any number, divide the number by 10 (move the decimal point one place left).
BTo find 5% of a number, find 10% and take half of that value.
CTo find 50% of a number, multiply the number by 2.
DTo find 20% of a number, find 10% and double it.
ETo find 1% of a number, divide the number by 100 (move the decimal point two places left).

Part C — Show Your Thinking

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

Question 9Written response · 2 points

Write your own estimation problem about percent, using a real situation from your life. Then solve it with a benchmark and say whether your estimate runs high or low.

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

Sentence starters: My situation: ___ . · ___% is near the benchmark ___ , so my estimate is ___ .