2) Simplify. Show all work. a. 0.047 + 0.839 b. 0.8 - 0.17 c. 3.184 + 42.06 d. 210.004 - 8.569 e. 0.38 0.4 f. 0.49 0.07 g. 21.6 3.15 h. 18.2 1.3 i. (0.32)2 j. (3.1)2 4) Show a conceptual development (from concrete to abstract) of addition of proper fractions with unlike denominators. (You may assume students are already able to add fractions with like denominators.) 3/4+1/3 7a) Shade the decimals by the appropriate amount in each grid. Compare using >,