Question

1)2м 7дм+2дм 2)8дм 7см-4дм 3)16дм / 2 4)12дм/3 5)2см/3 6)3дм*5

Answer 1

Ответ:

1) 2м 7дм+2дм=2м 9дм

2) 8дм 7см-4дм=4дм 7см

3) 16дм:2=8дм

4) 12дм:3=4дм

5) 2см:3=0,67см

6) 3дм*5=15дм

Answer 2

1. To add 2m 7dm and 2dm, we need to convert all the measurements to the same unit. Let's convert everything to decimeters (dm):

2m = 20dm (since 1m = 10dm) 2m 7dm + 2dm = 20dm + 2dm = 22dm

Therefore, 2m 7dm + 2dm equals 22 decimeters.

2. To subtract 4dm from 8dm 7cm, we also need to convert everything to the same unit. Let's convert cm to dm:

8dm 7cm = 8dm + 7cm/10 = 8dm + 0.7dm = 8.7dm

8.7dm - 4dm = 4.7dm

Therefore, 8dm 7cm - 4dm equals 4.7 decimeters.

3. To divide 16dm by 2, we simply divide the value:

16dm / 2 = 8dm

Therefore, 16dm divided by 2 equals 8 decimeters.

4. To divide 12dm by 3, we again divide the value:

12dm / 3 = 4dm

Therefore, 12dm divided by 3 equals 4 decimeters.

5. To divide 2cm by 3, we need to convert cm to dm:

2cm = 2cm/10 = 0.2dm

0.2dm / 3 = 0.0667dm (rounded to four decimal places)

Therefore, 2cm divided by 3 equals approximately 0.0667 decimeters.

6. To multiply 3dm by 5, we multiply the values:

3dm * 5 = 15dm

Therefore, 3dm multiplied by 5 equals 15 decimeters.