2.7 Exercise supplement

In the multiplication $5\times 9=\text{45}$ , 5 and 9 are called and 45 is called the .

In the multiplication $4\times 8=\text{32}$ , 4 and 8 are called and 32 is called the .

In the division $\text{24}÷6=4$ , 6 is called the , and 4 is called the .

In the division $\text{36}÷2=\text{18}$ , 2 is called the , and 18 is called the .

A number is divisible by 2 only if its last digit is .

A number is divisible by 3 only if of its digits is divisible by 3.

A number is divisible by 4 only if the rightmost two digits form a number that is .

$\begin{array}{c}\hfill 24\\ \hfill \underline{\times \mathrm{ 3}}\end{array}$

$\begin{array}{c}\hfill 14\\ \hfill \underline{\times \mathrm{ 8}}\end{array}$

$\text{21}÷7$

$\text{35}÷5$

$\begin{array}{c}\hfill 36\\ \hfill \underline{\times 22}\end{array}$

$\begin{array}{c}\hfill 87\\ \hfill \underline{\times 35}\end{array}$

$\begin{array}{c}\hfill 117\\ \hfill \underline{\times 42}\end{array}$

$\text{208}÷\text{52}$

$\begin{array}{c}\hfill 521\\ \hfill \underline{\times \mathrm{ 87}}\end{array}$

$\begin{array}{c}\hfill 1005\\ \hfill \underline{\times \mathrm{ 15}}\end{array}$

$\text{1338}÷\text{446}$

$\text{2814}÷\text{201}$

$\begin{array}{c}\hfill 5521\\ \hfill \underline{\times 8}\end{array}$

$\begin{array}{c}\hfill 6016\\ \hfill \underline{\times \mathrm{ 7}}\end{array}$

$\text{576}÷\text{24}$

$\text{3969}÷\text{63}$

$\begin{array}{c}\hfill 5482\\ \hfill \underline{\times \mathrm{ 322}}\end{array}$

$\begin{array}{c}\hfill 9104\\ \hfill \underline{\times \mathrm{ 115}}\end{array}$

$\begin{array}{c}\hfill 6102\\ \hfill \underline{\times 1000}\end{array}$

$\begin{array}{c}\hfill 10101\\ \hfill \underline{\times 10000}\end{array}$

$\text{162},\text{006}÷\text{31}$

$0÷\text{25}$

$\text{25}÷0$

$\text{4280}÷\text{10}$

$\text{2126000}÷\text{100}$

$\text{84}÷\text{15}$

$\text{126}÷4$

$\text{424}÷0$

$\text{1198}÷\text{46}$

$\text{995}÷\text{31}$

$0÷\text{18}$

$\begin{array}{c}\hfill 2162\\ \hfill \underline{\times 1421}\end{array}$

$0\times 0$

$5\times 0$

$\text{64}\times 1$

$1\times 0$

$0÷3$

$\text{14}÷0$

$\text{35}÷1$

$1÷1$

Use the commutative property of multiplication to rewrite $\text{36}\times \text{128}$ .

Use the commutative property of multiplication to rewrite $\text{114}\times \text{226}$ .

Use the associative property of multiplication to rewrite $(5\cdot 4)\cdot 8$ .

Use the associative property of multiplication to rewrite $\text{16}\cdot (\text{14}\cdot 0)$ .

A computer store is selling diskettes for $4 each. At this price, how much would 15 diskettes cost?

Light travels 186,000 miles in one second. How far does light travel in 23 seconds?

A dinner bill for eight people comes to exactly $112. How much should each person pay if they all agree to split the bill equally?

Each of the 33 students in a math class buys a textbook. If the bookstore sells $1089 worth of books, what is the price of each book?