Spiral Review (4.0A.4, 4.NF.2, 4.NF.3d, 4.NF.4c)
3. Write an expression that is equal to
3 x 21 2

896.31 cm= km 100cm = 1m 1000m = 1km a) 0.0089631 b) 0.0089631 c) 8.9631 d) 89.631

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5