Number System Test Reivew

Tags

CCSS.7.NS.A.2B

• 4

• 6

Tags

CCSS.7.EE.B.3

Tags

CCSS.7.NS.A.1D

The sum of two numbers is zero. If one of the numbers is 5, what is the other number?

• -10

• -5

• 0

• 5

Tags

CCSS.7.NS.A.1B

Answer explanation

Remember the additive inverse for this. This skill was in Space Selfie.

Tags

CCSS.7.NS.A.1B

• -20.25

• -17.25

Tags

CCSS.7.NS.A.1D

Tags

CCSS.7.NS.A.1C

• Step A; two negatives make a positive when dividing. So the student didn't add the oposite like they should have. So the answer should be -3.

• No mistake. The student work shown is correct.

• Step A; the student sholdn't have added, they should have subtracted. The correct answer is -3.

• Step B; should be written as -5 + 8 instead of 5 + 8 which gives you an answer of 3.

Tags

CCSS.7.NS.A.1D

• -117

• -13

• 3

• 17

Tags

CCSS.7.EE.B.3

• 12 - 12

• 12 + 12

• 12 - (-12)

• -12 + (-12)

Tags

CCSS.6.NS.C.5