2.5 Properties of multiplication

$(4\cdot 8)\cdot 2$ and $4\cdot (8\cdot 2)$

$(\text{100}\cdot \text{62})\cdot 4$ and $\text{100}\cdot (\text{62}\cdot 4)$

$\text{23}\cdot (\text{11}\cdot \text{106})$ and $(\text{23}\cdot \text{11})\cdot \text{106}$

$1\cdot (5\cdot 2)$ and $(1\cdot 5)\cdot 2$

The fact that $(\text{a first number}\cdot \text{a second number})\cdot \text{a third number}=\text{a first number}\cdot (\text{a second number}\cdot \text{a third number})$ is an example of the property of mul­tiplication.

The fact that $\text{1}\cdot \text{any number}=\text{that particular number}$ is an example of the property of mul­tiplication.

Use the numbers 7 and 9 to illustrate the com­mutative property of multiplication.

Use the numbers 6, 4, and 7 to illustrate the asso­ciative property of multiplication.

( [link] ) In the number 84,526,098,441, how many millions are there?

( [link] ) Replace the letter m with the whole number that makes the addition true. $\begin{array}{c}\hfill \text{85}\\ \hfill \underline{+ m}\\ \hfill \text{97}\end{array}$

( [link] ) Use the numbers 4 and 15 to illustrate the commutative property of addition.

( [link] ) Find the product. $\mathrm{8,}\text{000},\text{000}\times \mathrm{1,}\text{000}$ .

( [link] ) Specify which of the digits 2, 3, 4, 5, 6, 8,10 are divisors of the number 2,244.