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Add : scientific notation (2.5 x 104) + (3.4 x 104) x 10 (2.5 x 105) + (3.7 x 105) Add: scientific notation x 10 (7.25 x 109) + (0.74 x 108) Add : scientific notation x 10 (4.5 x 105) + (3.74 x 106) Add : scientific notation x 10 Add : (548 x 101) + (3.74 x 103) scientific notation x 10 scientific notation Subtract : (5.8 x 103) - (3.4 x 103) x 10 scientific notation Subtract : (3.4 x 106) - (2.1 x 106) x 10 scientific notation Subtract : (9.72 x 103) - (2.8 x 102) x 10 scientific notation Subtract : (9.72 x 103) - (22.8 x 102) x 10 Subtract : (54.5 x 102) - (21.74 x 102) scientific notation x 10 |