Question

7м2 40дм2=570дм2+???

Answer 1

1м²=100дм², 7м²=700дм², 700+40=740дм²

Answer 2

7м2=700дм2

700+40=740дм2

740-570=170дм2=1м2 70дм2

Answer 3

To solve this equation, we need to find the value of "???".

We have:

7 м^2 + 40 дм^2 = 570 дм^2 + ???

First, we need to convert all the units to the same measurement. Let's convert square meters (м^2) to square decimeters (дм^2):

1 м^2 = 100 дм^2

So, 7 м^2 = 7 * 100 дм^2 = 700 дм^2

Now, the equation becomes:

700 дм^2 + 40 дм^2 = 570 дм^2 + ???

Combine the terms on the left side:

700 дм^2 + 40 дм^2 = 740 дм^2

Now, the equation is:

740 дм^2 = 570 дм^2 + ???

To find the value of "???", we need to subtract 570 дм^2 from both sides:

740 дм^2 - 570 дм^2 = ??? + 570 дм^2 - 570 дм^2

170 дм^2 = ???

So, the value of "???" is 170 дм^2.