# Operations with metric units

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##### Intros
###### Lessons
1. Introduction to Operations with Metric Units
2. Intro to adding metric units
4. Subtracting mixed metric units
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##### Examples
###### Lessons
1. 6cm 2mm + 12 cm 8mm
2. 12 kg 150 g + 8 kg 90 g
3. 3 L 20mL + 5 L
2. Subtracting Mixed Customary Units
Subtract:
1. 12 L 20 mL - 3 L
2. 8 m 34 cm - 3 m 21 cm
3. 2 kg - 1000g
3. Operations with metric units: Word problems
Subtract:
1. Sam drove for 12 km 9 m and then took a break. After his break he drove 8 km 2m. How far in total did he drive?
2. Adam has an 8kg 20g bag of soil to use in his garden. If he uses 3 kg in the front garden and 2 kg 18 g in the back garden, how much soil does he have left?
###### Topic Notes

In this lesson, we will learn:

• Subtracting mixed metric units

Notes:

Metric Units of Length:

1km = 1000 m
1 m = 100 cm
1 cm = 10 mm

Metric Units of Volume

1L = 1000 mL

Metric Units of Weight

1kg = 1000 g

-to add or subtract measurements – measurements must be in the SAME units