Addition and Subtraction with Negatives

Show how you solve 10.9-6.85

You must show your work.

Tags

CCSS.7.NS.A.1

CCSS.7.NS.A.3

At 1:00pm, the temperature was -12.83°F. Over the the next 10 hours, the temperature dropped by 17.65°F. What was the temperature at 11:00pm?

Answer explanation

When you start at -12.83 and the temperature DROPS, it should go further below zero.

Tags

CCSS.7.NS.A.1C

Tags

CCSS.7.NS.A.1

CCSS.7.NS.A.3

7.63+(-10.42)=

Tags

CCSS.7.NS.A.1C

A negative plus a negative is ___ a negative

• always

• sometimes

• never

Tags

CCSS.7.NS.A.1C

A negative plus a negative is ___ a positive

• always

• sometimes

• never

Tags

CCSS.7.NS.A.1C

A negative plus a positive is ___ zero

• always

• sometimes

• never

Tags

CCSS.7.NS.A.1C

A negative plus a positive is ___ positive

• always

• sometimes

• never

Tags

CCSS.7.NS.A.1C

Are these relationships proportional?

• Proportional

• Not proportional

Tags

CCSS.7.RP.A.2A

What is the additive inverse of 12?

Tags

CCSS.7.NS.A.1B