Question

1дм4см+5см 9дм7см-5см 85см-3см

Answer 1

1дм4см+5см=1дм9см

9дм7см-5см=9дм2см

85см-3см=82см.

:)))удачи!

Answer 2

To perform the calculations, we need to ensure that all measurements are in the same units. Let's convert everything to centimeters (cm) first and then perform the operations.

1 dm = 10 cm 4 cm = 4 cm 5 cm = 5 cm

9 dm = 90 cm 7 cm = 7 cm

85 cm = 85 cm 3 cm = 3 cm

Now, let's calculate each expression step by step:

1 dm 4 cm + 5 cm = (10 cm + 4 cm) + 5 cm = 14 cm + 5 cm = 19 cm

9 dm 7 cm - 5 cm = (90 cm + 7 cm) - 5 cm = 97 cm - 5 cm = 92 cm

85 cm - 3 cm = 82 cm

So, the final results are: 1 dm 4 cm + 5 cm = 19 cm 9 dm 7 cm - 5 cm = 92 cm 85 cm - 3 cm = 82 cm