Integers

Integers are not closed under

• Addition

• Subtraction

• Multiplication

• Division

-12 ÷ 3

• -4
• 9
• 4
• -9

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

The minimum temperature in Stanthorpe was -5⁰C. On the same day in Cairns the minimum temperature was 17⁰C.

Calculate the temperature difference.

• 12⁰C

• -12⁰C

• 22⁰C

• 5^oC

Tags

CCSS.7.NS.A.1C

-3(-5) =

• 15
• -15
• -8
• 8

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

(-25) ÷ (-5)

• 5
• -5
• -20
• -30

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

The product of three integers is -85. If the two numbers are -17 and -5, find the third number.

• 2

• 1

• -1

• 0

In a class test, +4 marks were awarded for the correct answers and -1 mark for the wrong answers. Student scores 40 marks. If his correct answers were 11, find his wrong answers.

• 2

• 4

• 6

• 8

-1 x -1 x -1 x ......... x-1 (99 times)

• 99

• -99

• 1

• -1

Product of any non zero integer and its additive inverse is always

• positive

• negative

• depends on the number

• None of the above

-99 x 53+ (-99) x 46

• -8811

• -9702

• -673

• -9801