9 - Measures and Accuracy

Question 1

How do you convert cm -> m and vice versa and how do you convert cm² -> m² and vice versa?

Answer 1

[cm] /100 [m] x100 [cm]
100² = 10000
[cm²] /10000 [m²] x10000 [cm²]

Question 2

How would you calculate

(1.08 x 10^12) + (2.12 x 10^11)?

Answer 2

1. 08 x 10^12 = 10.8 x 10^11
2. 8 + 2.12 = 12.92
3. 92 x 10^11 =
4. 292 x 10^12

Question 3

If i rounded to the nearest whole number and got 18 what would be the rounding error interval?

Answer 3

17.5 ≤ 18 < 18.5