91Ó°ÊÓ

Find each of the following products. (Multiply.) In case use the shortcut method. $$\begin{array}{r}2,468 \\\\\times \quad 135 \\\\\hline\end{array}$$

Add each of the following. (All problems involve carrying in at least one column. $$\begin{array}{l} 21 \\ 43 \\ 65 \\ 87 \\ \hline \end{array}$$

Mentally give a one-digit estimate for each of the following quotients. That is, for each quotient, mentally estimate the answer using one of the digits \(1,2,3,4,5,6,7,8,\) or 9 $$921 \div 442$$

Use the rule for the order of operations to simplify each expression. [Examples \(13-16]\) $$360+14(27)^{2}$$

Write each of the following numbers in words. $$405$$

Complete the following tables. $$\begin{array}{|c|c|c|} \hline\begin{array}{c}\text { First } \\\\\text { Number } \\\a\end{array} & \begin{array}{c}\text { Second } \\\\\text { Number } \\\b\end{array} & \begin{array}{c}\text { The Difference } \\ a\text { of } b\\\a - b\end{array} \\ \hline 100 & 36 \\\\\hline 100 & 64 \\\\\hline 25 & 16 \\ \hline 25 & 9 \\\\\hline\end{array}$$

Find each of the following products. (Multiply.) In case use the shortcut method. $$\begin{aligned}&\begin{array}{r}2,725 \\\\\times \quad 324 \\\\\hline\end{array}\\\&\end{aligned}$$

A) Complete the following table by rounding the numbers on the left as indicated by the headings in the table. $$\begin{array}{|c|c|c|c|} \hline \begin{array}{c} \text { Original } \\ \text { Number } \\ \end{array} & \begin{array}{c} \text { Ten } \\ \end{array} & \begin{array}{c} \text { Rounded To The Nearest } \\ \text { Hundred } \\ \end{array} & \begin{array}{c} \text { Thousand } \\ \end{array} \\ \hline 4,353 \\ \hline \end{array}$$

Add each of the following. (All problems involve carrying in at least one column. $$\begin{array}{l} 999 \\ 444 \\ 555 \\ 222 \end{array}$$

A) Complete the following table by rounding the numbers on the left as indicated by the headings in the table. $$\begin{array}{|c|c|c|c|} \hline \begin{array}{c} \text { Original } \\ \text { Number } \\ \end{array} & \begin{array}{c} \text { Ten } \\ \end{array} & \begin{array}{c} \text { Rounded To The Nearest } \\ \text { Hundred } \\ \end{array} & \begin{array}{c} \text { Thousand } \\ \end{array} \\ \hline 10,985 \\ \hline \end{array}$$