Solve a. `93xx105` b. `88xx204`

Answer

To solve the problems \( a. \, 93 \times 105 \) and \( b. \, 88 \times 204 \), we will follow the steps of multiplication.

### Step-by-Step Solution:

#### Part a: \( 93 \times 105 \)

1. **Set up the multiplication**:
\[ \begin{array}{c} \ \ \ \ 93 \\ \times \ \ 105 \\ \hline \end{array} \]

2. **Multiply \( 93 \) by \( 5 \)** (the unit digit of \( 105 \)):
\[ 93 \times 5 = 465 \]
Write \( 465 \) below the line.

3. **Multiply \( 93 \) by \( 0 \)** (the ten's digit of \( 105 \)):
\[ 93 \times 0 = 0 \]
Write \( 0 \) below the line, shifted one position to the left.

4. **Multiply \( 93 \) by \( 1 \)** (the hundred's digit of \( 105 \)):
\[ 93 \times 1 = 93 \]
Write \( 93 \) below the line, shifted two positions to the left.

5. **Add all the results together**:
\[ \begin{array}{r} \ \ \ \ 465 \\ + \ \ \ \ 0 \\ + \ 9300 \\ \hline 9765 \\ \end{array} \]

Thus, \( 93 \times 105 = 9765 \).

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#### Part b: \( 88 \times 204 \)

1. **Set up the multiplication**:
\[ \begin{array}{c} \ \ \ \ 88 \\ \times \ \ 204 \\ \hline \end{array} \]

2. **Multiply \( 88 \) by \( 4 \)** (the unit digit of \( 204 \)):
\[ 88 \times 4 = 352 \]
Write \( 352 \) below the line.

3. **Multiply \( 88 \) by \( 0 \)** (the ten's digit of \( 204 \)):
\[ 88 \times 0 = 0 \]
Write \( 0 \) below the line, shifted one position to the left.

4. **Multiply \( 88 \) by \( 2 \)** (the hundred's digit of \( 204 \)):
\[ 88 \times 2 = 176 \]
Write \( 176 \) below the line, shifted two positions to the left.

5. **Add all the results together**:
\[ \begin{array}{r} \ \ \ \ 352 \\ + \ \ \ \ 0 \\ + \ 17600 \\ \hline 17952 \\ \end{array} \]

Thus, \( 88 \times 204 = 17952 \).

### Final Answers:
- \( a. \, 93 \times 105 = 9765 \)
- \( b. \, 88 \times 204 = 17952 \)

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