Question

Решить примеры, 5 дм -20 см? 6 см -40 мм?

Answer 1

5 дм=50 см
50 см - 20 см = 30 см (или 3 дм)
6 см = 60 мм
60 мм - 40 мм = 20 мм (или 2 см)

Answer 2

Calculation of 5 dm - 20 cm

To calculate 5 dm - 20 cm, we need to convert both measurements to the same unit.

1 decimeter (dm) is equal to 10 centimeters (cm).

Therefore, 5 dm is equal to 5 * 10 = 50 cm.

Now we can subtract 20 cm from 50 cm:

50 cm - 20 cm = 30 cm.

So, 5 dm - 20 cm is equal to 30 cm.

Calculation of 6 cm - 40 mm

To calculate 6 cm - 40 mm, we need to convert both measurements to the same unit.

1 centimeter (cm) is equal to 10 millimeters (mm).

Therefore, 6 cm is equal to 6 * 10 = 60 mm.

Now we can subtract 40 mm from 60 mm:

60 mm - 40 mm = 20 mm.

So, 6 cm - 40 mm is equal to 20 mm.