Multiplying decimals | 5th grade Math Worksheet | GreatSchools - Free Printable

Let's solve each of the decimal multiplication problems step by step. The task is to multiply decimals by whole numbers.

We'll go through each one:

---

1. 16.0 × 8

- Multiply as if they were whole numbers:
$ 160 × 8 = 1280 $
- Since 16.0 has one decimal place, the answer should have one decimal place.
- So, move the decimal one place from the right:
$ 128.0 $

✔ Answer: 128.0

---

2. 45.3 × 4

- $ 453 × 4 = 1812 $
- 45.3 has one decimal place, so the result must have one decimal place.
- $ 181.2 $

✔ Answer: 181.2

---

3. 14.7 × 2

- $ 147 × 2 = 294 $
- One decimal place → $ 29.4 $

✔ Answer: 29.4

---

4. 39.9 × 3

- $ 399 × 3 = 1197 $
- One decimal place → $ 119.7 $

✔ Answer: 119.7

---

5. 75.1 × 9

- $ 751 × 9 = 6759 $
- One decimal place → $ 675.9 $

✔ Answer: 675.9

---

6. 14.9 × 5

- $ 149 × 5 = 745 $
- One decimal place → $ 74.5 $

✔ Answer: 74.5

---

7. 58.0 × 5

- $ 580 × 5 = 2900 $
- One decimal place → $ 290.0 $

✔ Answer: 290.0

---

8. 89.9 × 4

- $ 899 × 4 = 3596 $
- One decimal place → $ 359.6 $

✔ Answer: 359.6

---

9. 23.3 × 1

- Any number × 1 = itself
- So $ 23.3 × 1 = 23.3 $

✔ Answer: 23.3

---

✔ Final Answers:

1. 128.0
2. 181.2
3. 29.4
4. 119.7
5. 675.9
6. 74.5
7. 290.0
8. 359.6
9. 23.3

---

🔍 Summary Tips:

- Ignore the decimal point initially and multiply like whole numbers.
- Count how many decimal places are in the original decimal number.
- Place the decimal point in the product so that it has the same number of decimal places.

Let me know if you'd like a printable version or explanation with steps!