Unit 1B Whole Numbers & Operations Review

Place Value

100

What is the value of the digit 7 in the number 174,359?

70,000

200

Estimate the difference by rounding to the nearest thousand.

51,624 - 38,264

52,000 - 38,000 = 14,000

300

Estimate the sum by rounding to the nearest ten thousand: 

13,628 + 24,180 + 17,702

10,000 + 20,000 + 20,000 = 50,000

400

99,000  

The value of the 9 in the ten thousands place is ____________________ the value of the 9 in the thousands place.

10 times

500

Finish writing 406,410 in expanded form using exponents...

(4x10⁵) + 

(4x10⁵) + (6x10³) + (4x10²) + (1x10¹)

Multiplication

100

81 x 100

8,100

200

672 x 3,000

2,016,000

300

800 x 10³

800,000

400

735 x 48

35, 280

500

1,652 x 58

95,816

Division

100

27,000 ÷ 1,000

27

200

64,000 ÷ 400

160

300

305,000 ÷ 10²

3,050

400

864 ÷ 36

24

500

6,800 ÷ 22

309 R 2

Order of Operations

100

54 ÷ 3 x 2

36

200

3 + 4 x 8

35

300

50 - 7 x (9 - 4)

15

400

3 x 5 + 28 ÷ 4 - 1

21

500

30 - {[24 ÷ (6 - 2)] x 5}

0

Real-World Problems

100

The school painted a mural that measures 465 inches by 72 inches. What is the area of the mural?

33,480 in²

200

There are 4,500 corn stalks in the field.  There are 90 corn stalks in each row.  How many rows are there?

50 rows

300

A bag of candy weighs 175 oz.  The candy is packed into 30 oz. bags.  How many 30 oz bags of candy are there?

5 bags

400

A school ordered a T-shirt for all 1,072 students.  The cost of each T-shirt was $18.  What is the total cost of the T-shirts?

$19,296

500

Every month, a baker buys 1,280 cases of flour.  Each case holds 20 bags of flour.  How many bags of flour does the baker buy in 10 months?

256,000 bags