Decimal multiplication worksheet featuring nine problems where decimals are multiplied by whole numbers.

Decimal multiplication worksheet with nine problems multiplying decimals by whole numbers, numbered 1 to 9, on a light green background.

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Problem: Solving Decimal Multiplication Worksheets

The task involves multiplying decimals by whole numbers. Let's solve each problem step by step.

---

#### Problem 1:
$$
16.0 \times 8
$$

1. Treat $16.0$ as $16$ (since the decimal part is $0$).
2. Multiply $16$ by $8$:
$$
16 \times 8 = 128
$$
3. Since there are no decimal places in $16.0$, the result remains a whole number.

Answer:
$$
\boxed{128}
$$

---

#### Problem 2:
$$
45.3 \times 4
$$

1. Multiply $45.3$ by $4$:
- Ignore the decimal point initially and multiply $453$ by $4$:
$$
453 \times 4 = 1812
$$
- Count the number of decimal places in $45.3$ (which is 1).
- Place the decimal point in $1812$ such that there is 1 decimal place:
$$
181.2
$$

Answer:
$$
\boxed{181.2}
$$

---

#### Problem 3:
$$
14.7 \times 2
$$

1. Multiply $14.7$ by $2$:
- Ignore the decimal point initially and multiply $147$ by $2$:
$$
147 \times 2 = 294
$$
- Count the number of decimal places in $14.7$ (which is 1).
- Place the decimal point in $294$ such that there is 1 decimal place:
$$
29.4
$$

Answer:
$$
\boxed{29.4}
$$

---

#### Problem 4:
$$
39.9 \times 3
$$

1. Multiply $39.9$ by $3$:
- Ignore the decimal point initially and multiply $399$ by $3$:
$$
399 \times 3 = 1197
$$
- Count the number of decimal places in $39.9$ (which is 1).
- Place the decimal point in $1197$ such that there is 1 decimal place:
$$
119.7
$$

Answer:
$$
\boxed{119.7}
$$

---

#### Problem 5:
$$
75.1 \times 9
$$

1. Multiply $75.1$ by $9$:
- Ignore the decimal point initially and multiply $751$ by $9$:
$$
751 \times 9 = 6759
$$
- Count the number of decimal places in $75.1$ (which is 1).
- Place the decimal point in $6759$ such that there is 1 decimal place:
$$
675.9
$$

Answer:
$$
\boxed{675.9}
$$

---

#### Problem 6:
$$
14.9 \times 5
$$

1. Multiply $14.9$ by $5$:
- Ignore the decimal point initially and multiply $149$ by $5$:
$$
149 \times 5 = 745
$$
- Count the number of decimal places in $14.9$ (which is 1).
- Place the decimal point in $745$ such that there is 1 decimal place:
$$
74.5
$$

Answer:
$$
\boxed{74.5}
$$

---

#### Problem 7:
$$
58.0 \times 5
$$

1. Treat $58.0$ as $58$ (since the decimal part is $0$).
2. Multiply $58$ by $5$:
$$
58 \times 5 = 290
$$
3. Since there are no decimal places in $58.0$, the result remains a whole number.

Answer:
$$
\boxed{290}
$$

---

#### Problem 8:
$$
89.9 \times 4
$$

1. Multiply $89.9$ by $4$:
- Ignore the decimal point initially and multiply $899$ by $4$:
$$
899 \times 4 = 3596
$$
- Count the number of decimal places in $89.9$ (which is 1).
- Place the decimal point in $3596$ such that there is 1 decimal place:
$$
359.6
$$

Answer:
$$
\boxed{359.6}
$$

---

#### Problem 9:
$$
23.3 \times 1
$$

1. Multiply $23.3$ by $1$:
- Any number multiplied by $1$ remains the same.
$$
23.3 \times 1 = 23.3
$$

Answer:
$$
\boxed{23.3}
$$

---

Final Answers:

1. $ \boxed{128} $
2. $ \boxed{181.2} $
3. $ \boxed{29.4} $
4. $ \boxed{119.7} $
5. $ \boxed{675.9} $
6. $ \boxed{74.5} $
7. $ \boxed{290} $
8. $ \boxed{359.6} $
9. $ \boxed{23.3} $

Parent Tip: Review the logic above to help your child master the concept of decimal multiplication worksheet 1.

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