Unit 1 Review

Place Value

100

In the number 631 what number is in the tens place?

3

200

In the number 98,210 what number is in the thousands place?

8

300

In the number 123,987 what number is in the ten thousands place?

2

400

In the number 6,871,234 what number is in the hundred thousands place?

8

500

In the number 927,138,405 what number is in the ten millions place?

2

Expanded Form

100

Write the number 53 in expanded form.

50 + 3

OR

(5 x 10¹) + (3 x 10⁰)

200

Write the number 4962 in expanded form.

4,000 + 900 + 60 + 2

OR

(4 x 10³) + (9 x 10²) + (6 x 10¹) + (2 x 10⁰)

300

Write the number 313,458 in expanded form.

300,000 + 10,000 + 3,000 + 400 + 50 + 8

OR

(3 x 10⁵) + (1 x 10⁴) + (3 x 10³) + (4 x 10²) + (5 x 10¹) + (8 x 10⁰)

400

Write the number 1,945,122 in expanded form.

1,000,000 + 900,000 + 40,000 + 5,000 + 100 + 20 + 2

OR

(1 x 10⁶) + (9 x 10⁵) + (4 x 10⁴) + (5 x 10³) + (1 x 10²) + (2 x 10¹) + (2 x 10⁰)

500

Write the number 82,030 in expanded form.

80,000 + 2,000 + 30

OR

(8 x 10⁴) + (2 x 10³) + (3 x 10¹)

Exponents

100

Write 6,000 as an exponent

6 x 10³

200

Write 12,000 as an exponent

12 x 10³

300

Write 90,000,000 as an exponent

9 x 10⁷

400

Write the number 8 as an exponent

8 x 10⁰

500

Turn the following exponents into a number:

(9 x 10⁷⁾ + (6 x 10⁶) + (2 x 10⁴) + (8 x 10¹) = 

9,602,008

Multiplication

100

50 x 7 = _____

350

OR

35 x 10¹

200

80 x 40 = ______

3,200

OR

32 x 10²

300

200 x 900 = _______

180,000

OR

18 x 10⁴

400

6,000 x 4,000 = ________

24,000,000

OR

24 x 10⁶

500

11,000 x 30,000 = ________

330,000,000

OR

33 x 10⁷

Patterns

100

4,000 is 10 times as much as _____?

400

200

50 is ______ divided by 10?

500

300

_______ is 100 times as much as 400.

40,000

400

What number is in the 10s place when 8,321 is divided by 10?

3

500

What is the quotient of 4,916 divided by 10?

491.6