Fifth Grade Challenging Math

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5-14)  Answers

a) 1, 2, 3, 5, 8, 13, 21, 34, 55, 89,
Each number is the sum of the previous 2 numbers

b) 1, 2, 4, 8, 16, 32, 64, 128,
Each number is the previous number multiplied by 2