MSTAR Practice Worksheet

Lesson 2-12: Multiply Decimals

Grade 6 Mathematics · Standard 6.NOS.3

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

What is 3.4 × 2.6?

A0.884
B8.48
C8.84
D88.4

Question 2Selected response · 1 point

What is 0.7 × 1.5?

A0.105
B1.05
C1.50
D10.5

Question 3Selected response · 1 point

What is 5.3 × 4?

A2.12
B20.12
C21.2
D212

Question 4Selected response · 1 point

Which estimate is closest to 4.8 × 3.2?

A4 × 3 = 12
B5 × 3 = 15
C5 × 4 = 20
D48 × 32 = 1,536

Question 5Selected response · 1 point

A car travels 55.5 miles per hour for 2.4 hours. How far does it go?

A13.32 miles
B57.9 miles
C133.2 miles
D1,332 miles

Question 6Selected response · 1 point

A customer orders 3 taco baskets at $4.25 each. What is the total before tax?

A$1.275
B$12.15
C$12.75
D$127.50

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

Find 2.4 × 0.5.

Fill in the bubble next to the one best answer.

A0.12
B1.2
C12
D120

Part B

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

How is the number of decimal places in the product determined?

AUse the number of decimal places in the larger factor.
BMultiply the number of decimal places in the two factors.
CAdd the number of decimal places in the two factors.
DThe product always has one decimal place.

Question 8Select all that apply

Select ALL statements that are true about multiplying decimals:

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

AMultiply the factors as if they were whole numbers first.
BThe total number of decimal places in the factors gives the number in the product.
CMultiplying by a number less than 1 gives a product smaller than the other factor.
DThe decimal points must be lined up before multiplying.
EEstimating first is a good way to check the placement of the decimal point.

Part C — Show Your Thinking

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

Question 9Written response · 2 points

A driver buys 9.5 gallons of gas at $3.40 per gallon. Show how to find the total cost. Use estimation to check if your answer is reasonable.

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