3.2A Compose and Decompose Numbers

There are approximately 27,300 species of fish known to scientists. Which of the following does NOT have a value of 27,300?

• 27,000 + 300

• 20,000 + 7,000 + 300

• 20,000 + 7,300

• 27,000 + 3,000

Marilyn volunteers at the local library twice a week. Last month 4,083 books were checked out. How is 4,083 written in expanded notation?

• 4,000 + 800 + 3

• 400 + 80 + 3

• 4 + 0 + 8 + 3

• 4,000 + 80 + 3

Marvin is part of Boy Scout troop 735. As part of a fundraiser for their next

camping trip, they sold popcorn tins to friends and family. They raised a total of $12,550. Which of the following does NOT have the same value as 12,550?

• 12,000 + 500 + 50

• 10,000 + 2,000 + 500 + 50

• 10,000 + 200 + 50 + 5

• 12,000 + 550

Answer explanation

10,000 + 200 + 50 + 5 is equal to 10,250.

Lawrence participated in a summer reading challenge. He read 112 books

during the challenge. Which of the following pictorial models does NOT show a value of 112?

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• 
• 
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Answer explanation

This model shows a value of 121.

Jordan and Marsha are playing a number game. Jordan gives Marsha these

clues about his secret number.

The number I’m thinking of is a two digit number.

The digit five is in the ones place.

The tens digit is three less than the ones digit.

What is Jordan’s secret number? Record your answer below.

Answer explanation

5 is in the ones place.

The tens place is three LESS than the ones digit.

5 - 3 = 2

My answer is 25

What is the value of the underlined digit in the numeral below?

43,642

• 6

• 600

• 60

• 6,000

In which of the numerals below is the digit 2 NOT pronounced ‘twenty’?

• 20,479

• 23,487

• 19,427

• 19,278

Which of the following does NOT have a value of 832?

• Eight hundreds + three tens + two ones

• Eight hundreds + thirty-two tens

• Eight hundreds + thirty-two ones

• Seven hundreds + thirteen tens + two ones

Mrs. Blackwell’s class is playing a number game. When it was Ted’s turn, he drew the following card.

In order to stay in the game, he must determine the value of the pictorial model shown on the card. What is the value of the pictorial model?

• 334

• 444

• 344

• 434

Which of the following has the same value as 20,000 + 3,000 + 60 + 7?

Select all that apply.

• 23,670

• 23, 067

• Twenty-three thousand, sixty-seven

• (2 x 10,000) + (3 x 1,00) + (6 x 10) + (7 x 1)