Using long division. Calculate the following

Divide 24 by 12.

$$\begin{array}{r} 22 \\ 12 \overline{) 264} \\ -24 \downarrow \\ \hline 24 \\ -24 \\ \hline 0 \end{array}$$

The remainder is 0.

• Answer: $\boxed{\text{22}}$

b) $396 \div 18$

Divide 36 by 18.

$$\begin{array}{r} 22 \\ 18 \overline{) 396} \\ -36 \downarrow \\ \hline 36 \\ -36 \\ \hline 0 \end{array}$$

The remainder is 0.

• Answer: $\boxed{\text{22}}$

c) $455 \div 27$

Divide 185 by 27.

$$\begin{array}{r} 16 \\ 27 \overline{) 455} \\ -27 \downarrow \\ \hline 185 \\ -162 \\ \hline 23 \end{array}$$

The remainder is 23.

• Answer: $\boxed{\text{16 remainder 23}}$

d) $672 \div 21$

Divide 42 by 21.

$$\begin{array}{r} 32 \\ 21 \overline{) 672} \\ -63 \downarrow \\ \hline 42 \\ -42 \\ \hline 0 \end{array}$$

The remainder is 0.

• Answer: $\boxed{\text{32}}$

2. Fill in the missing number, Show Calculation

a) $\_ \div 25 = 12$

$$x = 300$$

• Answer: $\boxed{\text{300}}$