Metric unit conversion practice using the ladder method, with completed examples.

Let's solve each of these unit conversions using the ladder method (also known as the metric conversion ladder). The ladder is based on the metric prefixes:

```
k h da _ d c m
```

This stands for:
- kilo (1000)
- hecto (100)
- daka (10)
- (base unit) (meters, liters, grams)
- deci (0.1)
- centi (0.01)
- milli (0.001)

When converting, you move the decimal point based on how many steps you go up or down the ladder.

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Let's go through each problem:

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1) 2000 mg = ___ g

- From milli (m) to gram (g): move 3 steps up.
- So, move decimal 3 places left:
2000 mg → 2.000 g → 2 g

✔ Answer: 2 g

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2) 104 km = ___ m

- From kilo (k) to meter (m): move 3 steps down.
- Move decimal 3 places right:
104 km → 104,000 m

✔ Answer: 104,000 m

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3) 480 cm = ___ m

- From centi (c) to meter (m): move 2 steps up.
- Move decimal 2 places left:
480 cm → 4.80 m → 4.8 m

✔ Answer: 4.8 m

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4) 5.6 kg = ___ g

- From kilo (k) to gram (g): move 3 steps down.
- Move decimal 3 places right:
5.6 kg → 5600 g

✔ Answer: 5600 g

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5) 8 mm = ___ cm

- From milli (m) to centi (c): move 1 step up.
- Move decimal 1 place left:
8 mm → 0.8 cm

✔ Answer: 0.8 cm

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6) 5 L = ___ mL

- From liter (L) to milli (mL): move 3 steps down.
- Move decimal 3 places right:
5 L → 5000 mL

✔ Answer: 5000 mL

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7) 198 g = ___ kg

- From gram (g) to kilo (kg): move 3 steps up.
- Move decimal 3 places left:
198 g → 0.198 kg

✔ Answer: 0.198 kg

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8) 75 mL = ___ L

- From milli (mL) to liter (L): move 3 steps up.
- Move decimal 3 places left:
75 mL → 0.075 L

✔ Answer: 0.075 L

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9) 50 cm = ___ m

- From centi (c) to meter (m): move 2 steps up.
- Move decimal 2 places left:
50 cm → 0.50 m → 0.5 m

✔ Answer: 0.5 m

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10) 5.6 m = ___ cm

- From meter (m) to centi (cm): move 2 steps down.
- Move decimal 2 places right:
5.6 m → 560 cm

✔ Answer: 560 cm

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11) 16 cm = ___ mm

- From centi (c) to milli (m): move 1 step down.
- Move decimal 1 place right:
16 cm → 160 mm

✔ Answer: 160 mm

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12) 2500 m = ___ km

- From meter (m) to kilo (km): move 3 steps up.
- Move decimal 3 places left:
2500 m → 2.5 km

✔ Answer: 2.5 km

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13) 65 g = ___ mg

- From gram (g) to milli (mg): move 3 steps down.
- Move decimal 3 places right:
65 g → 65,000 mg

✔ Answer: 65,000 mg

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14) 6.3 cm = ___ mm

- From centi (c) to milli (m): move 1 step down.
- Move decimal 1 place right:
6.3 cm → 63 mm

✔ Answer: 63 mm

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15) 120 mg = ___ g

- From milli (mg) to gram (g): move 3 steps up.
- Move decimal 3 places left:
120 mg → 0.120 g → 0.12 g

✔ Answer: 0.12 g

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Final Answers:

1) 2 g
2) 104,000 m
3) 4.8 m
4) 5600 g
5) 0.8 cm
6) 5000 mL
7) 0.198 kg
8) 0.075 L
9) 0.5 m
10) 560 cm
11) 160 mm
12) 2.5 km
13) 65,000 mg
14) 63 mm
15) 0.12 g

✔ All solved using the ladder method with correct decimal movement!