91Ó°ÊÓ

Use the definition of exponents as indicating repeated multiplication to simplify each of the following expressions. [Examples \(4-12\) ] $$9^{2}$$

Give the place value of the 5 in each of the following numbers. $$50,000$$

Find the difference in each case. (These problems all involve borrowing.) [Example 3] $$74-69$$

Use the definition of exponents as indicating repeated multiplication to simplify each of the following expressions. [Examples \(4-12\) ] $$10^{1}$$

Write each of the following numbers in expanded form. $$479$$

Round each of the numbers to the nearest hundred. $$1090$$

Area A swimming pool is 20 feet wide and 40 feet long. If it is surrounded by square tiles, each of which is 1 foot by 1 foot, how many tiles are there surrounding the pool?

Use the definition of exponents as indicating repeated multiplication to simplify each of the following expressions. [Examples \(4-12\) ] $$16^{0}$$

Find each of the following products. (Multiply.) In case use the shortcut method. $$\begin{array}{r}27 \\\\\times 36 \\\\\hline\end{array}$$

Round each of the numbers to the nearest hundred. $$6,778$$