Question

3m1dm+7 m= 15dm8cm-7cm5dm= 6dm4cm+3dm= 27m6dm+34m2dm= 13h6min+7h11min= 17m5dm-3dm= 9cm6mm+3cm= 18dm7cm-6dm4cm= 21h35min-13min= 42d15h-18d7h=

Answer 1

Ответ:

1.10метров1дм

2.142см30см=14,2дм3дм

3.9дм4см

4.61м8дм

5.20часов17мин

6.167дм5дм=16,7дм5дм

7.12см6мм

8.12дм3см

9.21час22мин

10.24дня8часов

Пошаговое объяснение:

Answer 2

Let's solve each of the given expressions step by step:

1. 3m 1dm + 7m To add lengths with different units, we need to convert them to a common unit. Since 1 meter (m) is equal to 10 decimeters (dm), we can convert the first expression to meters: 3m 1dm = 3m + 1dm = 3m + 0.1m = 3.1m

Now, we can add the two lengths: 3.1m + 7m = 10.1m

2. 15dm 8cm - 7cm 5dm We also need to convert the units to a common unit. Since 1 decimeter (dm) is equal to 10 centimeters (cm), we can convert the first expression to centimeters: 15dm 8cm = 15dm + 8cm = 15dm + 0.8dm = 15.8dm

Now, we can subtract the two lengths: 15.8dm - 7cm = 15.8dm - 0.7dm = 15.1dm

3. 6dm 4cm + 3dm Again, let's convert the units to a common unit: 6dm 4cm = 6dm + 4cm = 6dm + 0.4dm = 6.4dm

Now, we can add the two lengths: 6.4dm + 3dm = 9.4dm

4. 27m 6dm + 34m 2dm Let's convert the units to a common unit: 27m 6dm = 27m + 6dm = 27m + 0.6m = 27.6m

34m 2dm = 34m + 2dm = 34m + 0.2m = 34.2m

Now, we can add the two lengths: 27.6m + 34.2m = 61.8m

5. 13h 6min + 7h 11min We can directly add hours and minutes together: 13h 6min + 7h 11min = 20h 17min

6. 17m 5dm - 3dm Again, let's convert the units to a common unit: 17m 5dm = 17m + 5dm = 17m + 0.5m = 17.5m

Now, we can subtract the two lengths: 17.5m - 3dm = 17.5m - 0.3m = 17.2m

7. 9cm 6mm + 3cm We need to convert the units to a common unit: 9cm 6mm = 9cm + 6mm = 9cm + 0.6cm = 9.6cm

Now, we can add the two lengths: 9.6cm + 3cm = 12.6cm

8. 18dm 7cm - 6dm 4cm Let's convert the units to a common unit: 18dm 7cm = 18dm + 7cm = 18dm + 0.7dm = 18.7dm

6dm 4cm = 6dm + 4cm = 6dm + 0.4dm = 6.4dm

Now, we can subtract the two lengths: 18.7dm - 6.4dm = 12.3dm

9. 21h 35min - 13min We can directly subtract hours and minutes together: 21h 35min - 13min = 21h 22min

10. 42d 15h - 18d 7h Let's convert the units to a common unit: 42d 15h = 42d + 15h 18d 7h = 18d + 7h

Now, we can subtract the two lengths: 42d + 15h - (18d + 7h) = 24d + 8h

I hope this helps! Let me know if you have any further questions.