Math: CBA #1 Review

Find the mystery number using the clues below.

-The number is greater than 183

• -The number is less than 272

• -The number has a digit less than 5 in the tens place.

What is my number?

• 308

• 127

• 249

• 263

How do you write the following number in expanded notation?

24,076

• (2 x 10,000) + (4 x 1,000) + (7 x 10) + (6 x 1)

• (2 x 10,000) + (4 x 1,000) + (7 x 100) + (6 x 10)

• (2 x 10,000) + (4 x 10,000) + (7 x 10) + (6 x 1)

• (2 x 10,000) + (4 x 1,000) + (6 x 10) + 7

Which number sentence is NOT true?

There is more than one answer.

• 2,000 + 300 + 40 + 5 < two thousand three hundred forty

• 3,974 = three thousand seventy four

• 1 thousand, 3 hundreds, 2 tens, 8 ones = 1,328

• 3,000 + 50 + 5 > three thousand fourty

• 9,875 > 9,000 + 60 + 5

The expanded form of a number is shown.

90,000 + 200 + 40 + 1

What is the standard form of this number?

• 9,241

• 92,041

• 90,241

• 90,421

Which answer choice does NOT describe the number 7,140?

• The sum of seven thousands and fourteen tens

• The sum of seven thousands, one hundred, and forty tens

• The sum of seven thousands, one hundred, and four tens

• The sum of seven thousands, one hundred, and forty ones

The expanded notation of a number is shown.

(9 x 10,000) + (4 x 100) + (1 x 10)

What is the standard from of this number?

• 9,410

• 94,010

• 90,401

• 90,410

Which of these models represent the same number?

• Model X and Model Y, because 20 ones is equivalent to 20 tens.

• Model X and Model Z, because 20 ones is equivalent to 2 hundreds.

• Model Y and Model Z, because 20 tens is equivalent to 2 hundreds.

• None of these

Which list shows the numbers in order from greatest to least value?

• 38,945 | 9,052 | 9,181

• 6,912 | 29,013 | 34,987

• 58,702 | 50,716 | 581

• 6,092 | 60,019 | 5,005

The table shows the weights of four elephants.

Which comparison of these weights is true?

• The weight of Elephant R < the weight of Elephant T

• The weight of Elephant U > the weight of Elephant T

• The weight of Elephant S = the weight of Elephant U

• The weight of Elephant S < the weight of Elephant T

What is 564 rounded to the nearest ten?

• 560
• 570
• 564
• 550