Chapter 1

For the following problems, complete the table by rounding each number to the indicated positions. 106,007 $$ \begin{array}{|l|l|l|l|} \hline \text { hundred } & \text { thousand } & \text { ten thousand } & \text { million } \\ \hline & & & \\ \hline \end{array} $$

For the following problems, write all numbers in words. $$84$$

Does the word "eleven" qualify as a numeral?

Round to the most reasonable digit: During a semester, a mathematics instructor uses 487 pieces of chalk.

Find the sums and differences. $$ \begin{array}{r} 1,642 \\ +\quad 899 \\ \hline \end{array} $$

Perform the following subtractions. Show the expanded form for the first three problems. $$ \begin{array}{r} 76 \\ -28 \\ \hline \end{array} $$

For the next three problems, find the sums. $$ \begin{array}{r} 16,945 \\ 8,472 \\ 387,721 \\ 21,059 \\ 629 \\ \hline \end{array} $$

For the following problems, write all numbers in words. $$1491$$

Find the sums and differences. $$ \begin{array}{r} 627 \\ +\quad 48 \\ \hline \end{array} $$

Perform the following subtractions. Show the expanded form for the first three problems. $$ \begin{array}{r} 872 \\ -565 \\ \hline \end{array} $$

Use a calculator to find the following sums. $$62+81+12$$

For the following problems, complete the table by rounding each number to the indicated positions. 199 $$ \begin{array}{|l|l|l|l|} \hline \text { hundred } & \text { thousand } & \text { ten thousand } & \text { million } \\ \hline & & & \\ \hline \end{array} $$

For the following problems, write all numbers in words. $$8601$$

Find the sums and differences. $$ \begin{array}{r} 80,349 \\ +\quad 2,679 \\ \hline \end{array} $$

Perform the following subtractions. Show the expanded form for the first three problems. $$ \begin{array}{r} 441 \\ -356 \\ \hline \end{array} $$

Use a calculator to find the following sums. $$9,261+8,543+884+1,062$$

For the following problems, write all numbers in words. $$35,223$$

Numbers composed of more than three digits are sometimes separated into groups of three by commas. These groups of three are called _____.

Perform the following subtractions. Show the expanded form for the first three problems. $$ \begin{array}{r} 775 \\ -66 \\ \hline \end{array} $$

Use a calculator to find the following sums. $$10,221+9,016+11,445$$

For the following problems, write all numbers in words. $$71,006$$

In our number system, each period has three values assigned to it. These values are the same for each period. From right to left, what are they?

Find the sums and differences. $$ \begin{array}{r} 5,189 \\ 6,189 \\ 4,122 \\ +8,001 \\ \hline \end{array} $$

Find the sums and differences. $$ \begin{array}{r} 90,874 \\ +\quad 2,945 \\ \hline \end{array} $$

Perform the following subtractions. Show the expanded form for the first three problems. $$ \begin{array}{r} 5,663 \\ -2,559 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$14+5$$

For the following problems, write all numbers in words. $$437,105$$

In our number system, each period has three values assigned to it. These values are the same for each period. From right to left, what are they?

Find the sums and differences. $$21+16+42+11$$

Perform the following subtractions. $$ \begin{array}{r} 526 \\ -358 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$12+7$$

For the following problems, write all numbers in words. $$201,040$$

In the number 841 , how many tens are there?

Find the sums and differences. $$520-216$$

Perform the following subtractions. $$ \begin{array}{r} 63,419 \\ -\quad 7,779 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$46+2$$

For the following problems, write all numbers in words. $$8,001,001$$

Find the sums and differences. $$ \begin{array}{r} 80,001 \\ -\quad 9,878 \\ \hline \end{array} $$

Perform the following subtractions. $$ \begin{array}{r} 4,312 \\ -3,123 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$83+16$$

For the following problems, write all numbers in words. $$16,000,053$$

In the number \(10,046,\) how many thousands are there?

Find the sums and differences. Subtract 425 from 816 .

Find the sums and differences. $$ \begin{array}{r} 6,670,006 \\ +\quad 2,495 \\ \hline \end{array} $$

Perform each subtraction. $$ \begin{array}{r} 906 \\ -\quad 18 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$77+21$$

For the following problems, complete the table by rounding each number to the indicated positions. 551,061,285 $$ \begin{array}{|l|l|l|l|} \hline \text { hundred } & \text { thousand } & \text { ten thousand } & \text { million } \\ \hline & & & \\ \hline \end{array} $$

For the following problems, write all numbers in words. $$770,311,101$$

In the number 779,844,205 , how many ten millions are there?

Subtract 712 from the sum of 507 and 387 .