Printable primary math worksheet for math grades 1 to 6 based on ... - Free Printable

Let's solve this step-by-step. The worksheet asks us to convert between pounds (lb) and kilograms (kg) using the conversion factor:

> 1 pound = 0.45 kilograms
> So, 1 kg = 1 / 0.45 ≈ 2.222 pounds

We'll use this to fill in all the blanks, rounding answers to the nearest hundredth (i.e., two decimal places).

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Part 1: Pounds to Kilograms

Multiply each pound value by 0.45

1. 3 pounds = 3 × 0.45 = 1.35 kg
2. 0.3 pounds = 0.3 × 0.45 = 0.135 → 0.14 kg (rounded)
3. 16 pounds = 16 × 0.45 = 7.20 kg
4. 1.2 pounds = 1.2 × 0.45 = 0.54 kg
5. 11 pounds = 11 × 0.45 = 4.95 kg
6. 1.41 pounds = 1.41 × 0.45 = 0.6345 → 0.63 kg (rounded)
7. 0.5 pounds = 0.5 × 0.45 = 0.225 → 0.23 kg (rounded)
8. 29 pounds = 29 × 0.45 = 13.05 kg
9. 1.8 pounds = 1.8 × 0.45 = 0.81 kg
10. 0.02 pounds = 0.02 × 0.45 = 0.009 → 0.01 kg (rounded)
11. 0.1 pounds = 0.1 × 0.45 = 0.045 → 0.05 kg (rounded)
12. 2.06 pounds = 2.06 × 0.45 = 0.927 → 0.93 kg (rounded)

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Part 2: Kilograms to Pounds

Use: 1 kg = 2.222 pounds, so multiply kg by 2.222

1. 30 kg = 30 × 2.222 = 66.66 pounds
2. 1.5 kg = 1.5 × 2.222 = 3.333 → 3.33 pounds (rounded)
3. 200 kg = 200 × 2.222 = 444.40 pounds
4. 10.8 kg = 10.8 × 2.222 = 23.9776 → 23.98 pounds (rounded)
5. 400 kg = 400 × 2.222 = 888.80 pounds
6. 70 kg = 70 × 2.222 = 155.54 pounds
7. 250 kg = 250 × 2.222 = 555.50 pounds
8. 12.3 kg = 12.3 × 2.222 = 27.3106 → 27.31 pounds (rounded)
9. 120 kg = 120 × 2.222 = 266.64 pounds
10. 25 kg = 25 × 2.222 = 55.55 pounds
11. 390 kg = 390 × 2.222 = 866.58 pounds
12. 150 kg = 150 × 2.222 = 333.30 pounds

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✔ Final Answers:

#### Pounds to Kilograms
- 3 pounds = 1.35 kg
- 0.3 pounds = 0.14 kg
- 16 pounds = 7.20 kg
- 1.2 pounds = 0.54 kg
- 11 pounds = 4.95 kg
- 1.41 pounds = 0.63 kg
- 0.5 pounds = 0.23 kg
- 29 pounds = 13.05 kg
- 1.8 pounds = 0.81 kg
- 0.02 pounds = 0.01 kg
- 0.1 pounds = 0.05 kg
- 2.06 pounds = 0.93 kg

#### Kilograms to Pounds
- 30 kg = 66.66 pounds
- 1.5 kg = 3.33 pounds
- 200 kg = 444.40 pounds
- 10.8 kg = 23.98 pounds
- 400 kg = 888.80 pounds
- 70 kg = 155.54 pounds
- 250 kg = 555.50 pounds
- 12.3 kg = 27.31 pounds
- 120 kg = 266.64 pounds
- 25 kg = 55.55 pounds
- 390 kg = 866.58 pounds
- 150 kg = 333.30 pounds

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🔍 Notes:

- All values are rounded to the nearest hundredth as instructed.
- The conversion factor used is 1 lb = 0.45 kg, which is an approximation (actual value is ~0.45359237 kg). But since the problem specifies this value, we stick with it.

Let me know if you'd like a printable version or help understanding any specific conversion!