Question

Выполните действия. Выразите ответ в децеметрах.4м - 2дм + 14дм(5дм 2см + 8см) - 4дм

Answer 1

4м=40 дм
40дм-2дм+14дм=52дм
5дм2см=5.2дм
8см=0.8дм
(5.2дм+0.8дм)-4дм=2дм

Answer 2

Converting Measurements to Decimeters

To express the given measurements in decimeters, we'll first convert each measurement to decimeters and then perform the arithmetic.

1. Convert 4m to decimeters: - 4 meters = 40 decimeters

2. Convert 2dm to decimeters: - 2 decimeters = 2 decimeters

3. Convert 14dm to decimeters: - 14 decimeters = 14 decimeters

4. Convert 5dm 2cm to decimeters: - 5 decimeters + 2 centimeters = 5 decimeters + 0.2 decimeters = 5.2 decimeters

5. Convert 8cm to decimeters: - 8 centimeters = 0.8 decimeters

Performing the Arithmetic

Now, let's perform the arithmetic to express the given expression in decimeters:

4m - 2dm + 14dm - (5dm 2cm + 8cm) - 4dm

= (40dm) - (2dm) + (14dm) - (5.2dm + 0.8dm) - (4dm)

= 40dm - 2dm + 14dm - 6dm - 4dm

= 42dm - 12dm

= 30dm

Therefore, the given expression, when expressed in decimeters, is 30 decimeters.