Correct: 45 x 10 = 450, 156 x 100 = 15,600, 20 x 10 = 200, 70 x 100= 7,000, 640 x 1,000= 640,000, 99 x 100= 9,900, 880 x 100= 88,000, 384 x 100= 38,400, Incorrect: 45 x 10 = 4500, 156 x 100 = 1,560, 20 x 10 = 2,000, 70 x 10= 7,000, 640 x 1,000= 64,000, 99 x 100 = 990, 880 x 100= 8,800, 384 x 100= 3,840,

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