# Prealgebra

## Educators ### Problem 1

In the following exercises, determine which of the following numbers are a counting numbers b whole numbers.
$$0, \frac{2}{3}, 5,8.1,125$$ Karly W.

### Problem 2

In the following exercises, determine which of the following numbers are a counting numbers b whole numbers.
$$0, \frac{7}{10}, 3,20.5,300$$ Karly W.

### Problem 3

In the following exercises, determine which of the following numbers are a counting numbers b whole numbers.
$$0, \frac{4}{9}, 3.9,50,221$$ Karly W.

### Problem 4

In the following exercises, determine which of the following numbers are a counting numbers b whole numbers.
$$0, \frac{3}{5}, 10,303,422.6$$ Karly W.

### Problem 5

In the following exercises, use place value notation to find the value of the number modeled by the base-10 blocks. Karly W.

### Problem 6

In the following exercises, use place value notation to find the value of the number modeled by the base-10 blocks. Karly W.

### Problem 7

In the following exercises, use place value notation to find the value of the number modeled by the base-10 blocks. Karly W.

### Problem 8

In the following exercises, use place value notation to find the value of the number modeled by the base-10 blocks. Karly W.

### Problem 9

In the following exercises, find the place value of the given digits.
579,601
(a) 9$\quad$
(b) 6$\quad$
(c) 0$\quad$
(d) 7$\quad$
(e) 5$\quad$ Karly W.

### Problem 10

In the following exercises, find the place value of the given digits.
398,127
(a) 9$\quad$
(b) 3$\quad$
(c) 2$\quad$
(d) 8$\quad$
(e) 7$\quad$ Karly W.

### Problem 11

In the following exercises, find the place value of the given digits.
56,804,379
(a) 8$\quad$
(b) 6$\quad$
(c) 4$\quad$
(d) 7$\quad$
(e) 0$\quad$ Karly W.

### Problem 12

In the following exercises, find the place value of the given digits.
78,320,465
(a) 8$\quad$
(b) 4$\quad$
(c) 2$\quad$
(d) 6$\quad$
(e) 7$\quad$ Karly W.

### Problem 13

In the following exercises, name each number in words.
$$1,078$$ Karly W.

### Problem 14

In the following exercises, name each number in words.
$$5,902$$ Karly W.

### Problem 15

In the following exercises, name each number in words.
$$364,510$$ Karly W.

### Problem 16

In the following exercises, name each number in words.
$$146,023$$ Karly W.

### Problem 17

In the following exercises, name each number in words.
$$5,846,103$$ Karly W.

### Problem 18

In the following exercises, name each number in words.
$$1,458,398$$ Karly W.

### Problem 19

In the following exercises, name each number in words.
$$37,889,005$$ Karly W.

### Problem 20

In the following exercises, name each number in words.
$$62,008,465$$ Karly W.

### Problem 21

In the following exercises, name each number in words.
The height of Mount Ranier is14,410 feet. Karly W.

### Problem 22

In the following exercises, name each number in words.
The height of Mount Adams is 12,276 feet. Karly W.

### Problem 23

In the following exercises, name each number in words.
Seventy years is 613,200 hours. Karly W.

### Problem 24

In the following exercises, name each number in words.
One year is 525,600 minutes. Karly W.

### Problem 25

In the following exercises, name each number in words.
The U.S. Census estimate of the population of Miami-Dade county was 2,617,176. Karly W.

### Problem 26

In the following exercises, name each number in words.
The population of Chicago was 2,718,782. Karly W.

### Problem 27

In the following exercises, name each number in words.
There are projected to be 23,867,000 college and university students in the US in
five years. Karly W.

### Problem 28

In the following exercises, name each number in words.
About twelve years ago there were 20,665,415 registered automobiles in California Karly W.

### Problem 29

In the following exercises, name each number in words.
The population of China is expected to reach 1,377,583,156 in 2016. Karly W.

### Problem 30

In the following exercises, name each number in words.
The population of India is estimated at 1,267,401,849 as of July 1, 2014. Karly W.

### Problem 31

In the following exercises, write each number as a whole number using digits.
four hundred twelve Karly W.

### Problem 32

In the following exercises, write each number as a whole number using digits.
two hundred fifty-three Karly W.

### Problem 33

In the following exercises, write each number as a whole number using digits.
thirty-five thousand, nine hundred seventy-five Karly W.

### Problem 34

In the following exercises, write each number as a whole number using digits.
sixty-one thousand, four hundred fifteen Karly W.

### Problem 35

In the following exercises, write each number as a whole number using digits.
eleven million, forty-four thousand, one hundred sixty-seven Karly W.

### Problem 36

In the following exercises, write each number as a whole number using digits.
eighteen million, one hundred two thousand, seven hundred eighty-three Karly W.

### Problem 37

In the following exercises, write each number as a whole number using digits.
three billion, two hundred twenty-six million, five hundred twelve thousand, seventeen Karly W.

### Problem 38

In the following exercises, write each number as a whole number using digits.
eleven billion, four hundred seventy-one million, thirty-six thousand, one hundred six Karly W.

### Problem 39

In the following exercises, write each number as a whole number using digits.
The population of the world was estimated to be seven billion, one hundred seventy-three million people. Karly W.

### Problem 40

In the following exercises, write each number as a whole number using digits.
The age of the solar system is estimated to be four billion, five hundred sixty-eight million years. Karly W.

### Problem 41

In the following exercises, write each number as a whole number using digits.
Lake Tahoe has a capacity of thirty-nine trillion gallons of water. Karly W.

### Problem 42

In the following exercises, write each number as a whole number using digits.
The federal government budget was three trillion, five hundred billion dollars. Karly W.

### Problem 43

In the following exercises, round to the indicated place value.
$$\begin{array}{l}{\text {Round to the nearest ten: }} \\ {\text { (a) } 386 \quad \text { (b) } 2,931}\end{array}$$ Karly W.

### Problem 44

In the following exercises, round to the indicated place value.
$$\begin{array}{l}{\text { Round to the nearest ten: }} \\ {\text { (a) } 792 \quad \text { ( b) } 5,647}\end{array}$$ Karly W.

### Problem 45

In the following exercises, round to the indicated place value.
$$\begin{array}{l}{\text { Round to the nearest }} \\ {\text { hundred: }} \\ {\text { (a) } 13,748 \quad \text { (b) } 391,794}\end{array}$$ Karly W.

### Problem 46

In the following exercises, round to the indicated place value.
$$\begin{array}{l}{\text { Round to the nearest hundred: }} \\ {\text { (a) } 28,166 \quad \text { (} {b) } 481,628}\end{array}$$ Karly W.

### Problem 47

In the following exercises, round to the indicated place value.
$$\begin{array}{l}{\text { Round to the nearest ten: }} \\ {\text { (a) } 1,492 \quad \text { (b) } 1,497}\end{array}$$ Karly W.

### Problem 48

In the following exercises, round to the indicated place value.
$$\begin{array}{l}{\text { Round to the nearest }} \\ {\text { thousand: }} \\ {\text { (a) } 2,391 \text { (b) } 2,795}\end{array}$$ Karly W.

### Problem 49

In the following exercises, round to the indicated place value.
$$\begin{array}{l}{\text { Round to the nearest }} \\ {\text { hundred: }} \\ {\text { (a) } 63,994 \quad \text { (b) } 63,949}\end{array}$$ Karly W.

### Problem 50

In the following exercises, round to the indicated place value.
$$\begin{array}{l}{\text { Round to the nearest }} \\ {\text { thousand: }} \\ {\begin{array}{lll}{\text { (a) } 163,584} & {\text { (b) } 163,246}\end{array}}\end{array}$$ Karly W.

Writing a Check Jorge bought a car for $24,493. He paid for the car with a check. Write the purchase price in words. Karly W. Numerade Educator ### Problem 52 Writing a Check Marissa’s kitchen remodeling cost$18,549. She wrote a check to the contractor. Write the amount paid in words. Karly W.

Buying a Car Jorge bought a car for $24,493. Round the price to the nearest: a. ten dollars b. hundred dollars c. thousand dollars d. ten-thousand dollars Karly W. Numerade Educator ### Problem 54 Remodeling a Kitchen Marissa’s kitchen remodeling cost$18,549. Round the cost to the
nearest:
a. ten dollars
b. hundred dollars
c. thousand dollars
d. ten-thousand dollars Karly W.

### Problem 55

Population The population of China was 1,355,692,544 in 2014. Round the population to the nearest:
a. billion people
b. hundred-million people
c. million people Karly W.

### Problem 56

Astronomy The average distance between Earth and the sun is 149,597,888 kilometers. Round the distance to the nearest:
a. hundred-million kilometers
b. ten-million kilometers
c. million kilometers Karly W.

### Problem 57

In your own words, explain the difference between the counting numbers and the whole numbers. Karly W. 