Efectúa estas sumas y restas colocando primero las cantidades en columnas: a) 10,06 + 502,403 + 9,67 d) 35,029 + 1,008 + 146,99 + 0,57 g) 1.082,3 – 395,28 b) 2,094 + 0,502 e) 6,045 – 3,918 h) 209,51 – 38,463 c) 28,307 + 5,92 + 100,6 f) 25,96 – 18,29 i) 1,304 – 0,295

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte