P – CC – PP38

Identify and correct the error in the following number sequence: 40, 60, 80, 100, 110, 120, 140

P – CC – PP39

Identify and correct the error in the following number sequence: 550, 575, 600, 650, 675, 700, 725

P – CC – PP40

Arrange the following numbers in the proper sequence if skip counting by 20: 280, 200, 240, 260, 300, 220, 320, 180, 160

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