Lesson 4 Practice

When adding rational numbers with the same sign, you must:

• Subtract and keep the sign of the biggest number

• Add together and keep the sign

• Keep, change, switch

• Add the opposite

Tags

CCSS.7.NS.A.1C

-6.5 + (-0.5) 

• -7
• 7
• 6
• -6

Tags

CCSS.7.NS.A.1C

34.5 + (-7)

• -41.5
• 41.5
• -27.5
• 27.5

Tags

CCSS.7.NS.A.1C

Find  -6.23 - 7.5

• 13.73
• 1.3
• -1.2
• -13.73

Tags

CCSS.7.NS.A.1C

Subtract. 

• 11.25
• 10.85
• 10.95
• 12.25

Tags

CCSS.7.NS.A.1C

-4.7 + 18.5

• 23.2
• 13.8
• -13.8
• -23.2

Tags

CCSS.7.NS.A.1C

-40 + 15.05

• 55.05
• 24.95
• -24.95
• 14.65

Tags

CCSS.7.NS.A.1C

Tell whether this sentence is always true, sometimes true, or never true.  (COME UP WITH EXAMPLES BEFORE YOU PICK)

negative - positive = negative

• always true
• sometimes true
• never true

Tags

CCSS.7.NS.A.1C

When adding decimals with different signs you....

• subtract and take the sign of the larger number
• add the opposite
• add and keep the sign
• subtract and keep the sign

Tags

CCSS.7.NS.A.1C

The temperature was 3 degrees C on Monday and was 7.5 degrees lower the next day. What was the temperature on Tuesday?

• 10.5* C

• 4.5* C

• -4.5* C

• -10.5* C