Chapter 1

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 304,056 \\ -\quad 20,008 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$ \begin{array}{r} 116 \\ 27 \\ 110 \\ 110 \\ +\quad 8 \\ \hline \end{array} $$

For the following problems, write each number using digits. Nine hundred twenty billion, four hundred seventeen million, twenty-one thousand

Combine the numbers as indicated. $$2,562+8,754-393-385-910$$

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 64,000,002 \\ -\quad 856,743 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$ \begin{array}{r} 75,206 \\ 4,152 \\ +16,007 \\ \hline \end{array} $$

For the following problems, write each number using digits. Twenty-three billion

Add and subtract as in dicated. Subtract 671 from 8,027 .

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 4,109 \\ -\quad 856 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$ \begin{aligned} &\begin{array}{r} 8,226 \\ 143 \\ 92,015 \\ 8 \\ 487,553 \end{array}\\\ &\begin{array}{r} 487,553 \\ 5,218 \\ \hline \end{array} \end{aligned} $$

For the following problems, write each number using digits. Fifteen trillion, four billion, nineteen thousand, three hundred five

Add and subtract as in dicated. Subtract 387 from 6,342 .

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 10,113 \\ -\quad 2,079 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$ \begin{array}{r} 50,006 \\ 1,005 \\ 100,300 \\ 20,008 \\ 1,000,009 \\ 800,800 \\ \hline \end{array} $$

For the following problems, write each number using digits. One hundred trillion, one

Add and subtract as in dicated. Subtract 2,926 from 6,341 .

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 605 \\ -\quad 77 \\ \hline \end{array} $$

For the following problems, perform the additions. If you can, check each sum with a calculator. $$ \begin{array}{r} 616 \\ 42,018 \\ 1,687 \\ 225 \\ 8,623,418 \\ 12,506,508 \\ 19 \\ 2,121 \\ 195,643 \\ \hline \end{array} $$

Add and subtract as in dicated. Subtract 4,355 from the sum of 74 and 7,319 .

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 59 \\ -26 \\ \hline \end{array} $$

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 1,468 \\ 2,183 \\ \hline \end{array} $$

In the number 6,641 , how many tens are there?

Add and subtract as in dicated. Subtract 325 from the sum of 7,188 and 4,964 .

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 36,107 \\ -\quad 8,314 \\ \hline \end{array} $$

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 928,725 \\ 15,685 \\ \hline \end{array} $$

What is the value of 7 in \(44,763 ?\)

Add and subtract as in dicated. Subtract 496 from the difference of 60,321 and \(99 .\)

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 92,526,441,820 \\ -59,914,805,253 \\ \hline \end{array} $$

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 82,006 \\ 3,019,528 \\ \hline \end{array} $$

Is there a smallest whole number? If so, what is it?

Add and subtract as in dicated. Subtract 20,663 from the difference of 523,150 and \(95,225 .\)

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 1,605 \\ -\quad 881 \\ \hline \end{array} $$

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 18,621 \\ 5,059 \\ \hline \end{array} $$

Write a four-digit number with a 9 in the tens position.

Add and subtract as in dicated. Add the difference of 843 and 139 to the difference of 4,450 and \(839 .\)

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 30,000 \\ -26,062 \\ \hline \end{array} $$

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 92 \\ 48 \\ \hline \end{array} $$

Add and subtract as in dicated. Add the differen ce of 997,468 and 292,513 to the difference of 22,140 and 8,617 .

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 600 \\ -216 \\ \hline \end{array} $$

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 16 \\ 37 \\ \hline \end{array} $$

Add and subtract as in dicated. Subtract the difference of 8,412 and 576 from the sum of 22,140 and 8,617 .

For the following problems, perform the subtractions. You may chedk each difference with a calculator. $$ \begin{array}{r} 9,000,003 \\ -\quad 726,048 \\ \hline \end{array} $$

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 21 \\ 16 \\ \hline \end{array} $$

Add and subtract as in dicated. Add the sum of \(2,273,3,304,847,\) and 16 to the difference of 4,365 and 864 .

Subtract 63 from 92 .

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 11,172 \\ 22,749 \\ 12,248 \\ \hline \end{array} $$

Add and subtract as in dicated. Add the sum of \(19,161,201,166,127,\) and 44 to the difference of the sums of \(161,2,455,\) and \(85,\) and \(21,26,48,\) and 187 .

Subtract 35 from 86 .

For the following problems, perform the additions and round to the nearest hundred. $$ \begin{array}{r} 240 \\ 280 \\ 210 \\ 310 \\ \hline \end{array} $$

Add and subtract as in dicated. Is the sum of 626 and 1,242 the same as the sum of 1,242 and \(626 ?\) Justify your claim.