Algebra: Adding and Subtracting Negative Numbers

Compute −7 + (−5). Choose the correct result and explain the sign rule used.

• −12 because same signs add and keep sign

• 7 because ignore signs when adding

• −2 because subtract and keep negative

• 12 because negatives cancel to positive

Tags

CCSS.7.NS.A.1C

Which statement correctly describes adding integers with different signs?

• Subtract absolute values, keep sign of smaller absolute value

• Add absolute values, keep positive sign always

• Add absolute values, keep sign of smaller number

• Subtract absolute values, keep sign of larger absolute value

Tags

CCSS.7.NS.A.1C

Evaluate 9 + (−13).

• −4 because 13 has greater absolute value

• 4 because 9 is positive and larger

• −22 because add and keep negative

• 22 because negatives turn positive

Tags

CCSS.7.NS.A.1C

Fill in the blank: Subtracting a number is the same as (a)   its opposite.

Tags

CCSS.7.NS.A.1C

Rewrite and evaluate: 6 − (−2).

• 6 + (−2) = 4 by different signs

• −6 + 2 = −4 by change both signs

• 6 − 2 = 4 by same signs rule

• 6 + 2 = 8 by add the opposite

Tags

CCSS.7.NS.A.1B

Choose all expressions equivalent to −5 − 4.

• −5 + (−4)

• −5 + 4

• −(5 + 4)

• 4 − 5

Tags

CCSS.7.NS.A.1D

Complete the rule: When subtracting, change the subtraction sign to __________, then change the __________ of the number after it.

Tags

CCSS.7.NS.A.1C

19 - (-13)

• 6
• 32
• 24
• 18

Tags

CCSS.7.NS.A.1C

45 + (-18)

• 34
• 27
• -27
• 25

Tags

CCSS.7.NS.A.1C

-10 - 15

• -5
• -25
• 5
• 25

Tags

CCSS.7.NS.A.1C