Unit 1 Math Review

The expanded notation of the number is shown.

(8 x 10,000) + (3 x 100) + (2 x 10)

What is the standard form of this number?

The expanded form of the number is shown.

(3 x 10,000) + (4 x 100) + (2 x 10)

What is the standard form of this number?

• 3,420

• 30,420

• 342

The expanded notation of a number is shown.

(3 x 10,000) + (1 x 1,000) + (2 x 100) + (1 x 1)

What is the standard form of this number?

• 31,201

• 31,211

• 3,121

The expanded notation of a number is shown.

(5 x 1,000) + (3 x 10)

What is the standard form of this number?

• 530

• 53

• 5,030

Which of these describes the number 31,420?

• The sum of three thousands, four tens, and two ones

• The sum of three ten thousands, one thousand, four hundreds, and two tens.

• The sum of three hundreds, one thousand, four hundreds, and two ones

Which describes the number 42,761?

• The sum of four ten thousands, two thousands, seven hundreds, six tens, and one one.

• The sum of four thousands, seven tens, and six ones

• The sum of four ten thousands, seven thousands, and six ones

Which statement about the number 2,222 is true?

• There is a 2 in the ones, so 2 times 1 equals 200

• There is a 2 in the thousands place, so 2 times 1,000 equals 2,000

• There is a 2 in the hundreds, so 2 times 100 equals 5

Which statement about the number 7,777 is true?

• There is a 7 in the tens, so 7 times 10 equals 7,000

• There is a 7 in the ones, so 7 times 1 equals 70

• There is a 7 in the hundreds, so 7 times 100 equals 700

Which expression represents the number 987?

• 90 + 80 + 70

• 300 + 600 + 40 + 40 + 7

• 900 + 8 + 7

The sum of 7 ten thousands, 2 hundreds, and 8 ones can be expressed as what number in standard form?

• 7,288

• 70,208

• 70,802