8th grade Unit 1 corrections

The points on the number line represent values of four different numbers. Which points best represent a value between √3 and √7?

• Point A

• Point B

• Point C

• Point D

• Point E

Tags

CCSS.8.NS.A.2

The length of a micrometer is approximately 0.00003937 inch. How is this number written in scientific notation?

• 0.3937 × 10⁻⁴

• 3.937 × 10⁻⁵

• 3.937 × 10⁻⁶

• 3.937 × 10⁻⁴

Tags

CCSS.8.EE.A.3

At its core, the sun can reach temperatures as high as 27 million degrees Fahrenheit, or 27,000,000 °F. How is this temperature written in scientific notation?

Tags

CCSS.8.EE.A.3

Which list shows these numbers in order from least to greatest?

• 12.39, 12.62, √146, 12 3/4, 12 5/8

• √146, 12.39, 12.62, 12 5/8, 12 3/4

• 12.62, 12.39, √146, 12 3/4, 12 5/8

• 12 3/4, 12 5/8, 12.62, 12.39, √146

Tags

CCSS.8.NS.A.2

• True

• False

Tags

CCSS.8.NS.A.2

D. -0.07 > -0.7 Is this statement true or false?

• True

• False

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

A student read 24 books in 15 weeks. Which graph has a slope that best models this rate?

• [Graph showing a horizontal line at 24 books]

• [Graph showing a straight line increasing from (0,0) to (30,30)]

Tags

CCSS.8.EE.B.5

A deep sea diver swims downwards 20 feet every minute. Which graph has a slope that best represents this rate?

• (Graph labeled 'Depth of Dive over Time' with a line going from (0,0) to (4,-80))

• (Graph labeled 'Depth of Dive over Time' with a vertical line at x=2)

• (Graph labeled 'Depth of Dive over Time' with a line going from (0,0) to (8,-80))

• (Graph labeled 'Depth of Dive over Time' with a horizontal line at y=-10)

Tags

CCSS.8.EE.B.5

Alyssa participated in a 12-kilometer walk-a-thon to raise money for her favorite charity. She walked at a constant rate during the entire walk-a-thon. The table shows Alyssa’s times at the beginning, the middle, and the end of the walk-a-thon. | Time (hours) | 0 | 1.25 | 2.5 | |--------------|----|------|-----| | Distance Walked (kilometers) | 0 | 6 | 12 | What is the slope? What is the y-intercept?

• Slope = 4.8; y-intercept = (0, 0)

• Slope = 6; y-intercept = (0, 6)

• Slope = 2.5; y-intercept = (0, 0)

• Slope = 12; y-intercept = (0, 0)

Plot two points that represent a proportional relationship in which y = 7 when x = 3. Select two points on the coordinate grid. A line will connect the points.

• Possible points: (0, 0) and (3, 7)

• Possible points: (0, 0) and (7, 3)

• Possible points: (1, 7) and (3, 21)

• Possible points: (0, 7) and (3, 0)

Tags

CCSS.7.RP.A.2D