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# Common Core Standard 7.NS.A.1c Questions

Understand subtraction of rational numbers as adding the additive inverse, pq = p + (–q). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts.

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Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
-50 - (-25)

Select the equivalent expression.
1. -50 + 25
2. -50 - 25
3. -50 + (-25)
4. -25 - 50
Grade 7 Mixed Numbers CCSS: 7.NS.A.1, 7.NS.A.1c
$2 1/2 - (- 1/2)$
1. $-3$
2. $-2$
3. $2 1/2$
4. $3$
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
$-33 - -51 =$
1. $18$
2. $-18$
3. $84$
4. $-84$
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
$-70 - 42 =$
1. $28$
2. $-28$
3. $112$
4. $-112$
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
$-11 - 72 =$
1. $-61$
2. $61$
3. $83$
4. $-83$
Grade 7 Mixed Numbers CCSS: 7.NS.A.1, 7.NS.A.1c
$4 1/2 - (+6)$
1. $+1 1/2$
2. $+10 1/2$
3. $-10 1/2$
4. $-1 1/2$
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
$-38 - 14 =$
1. $52$
2. $-52$
3. $24$
4. $-24$
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1, 7.NS.A.1c
Solve:
-12 - (6) =
1. 6
2. -6
3. 18
4. -18
Grade 7 Mixed Numbers CCSS: 7.NS.A.1, 7.NS.A.1c
$-7 3/4 - (- 2 1/4)$
1. $-5 1/2$
2. $-10$
3. $2 1/4$
4. $10$
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1, 7.NS.A.1c
A seabird dives 17.3 feet down below the surface of the water. If the seabird ascends 6.7 feet, and then ascends another 2.9 feet, at what height is it now?
1. 6.7 feet in the air
2. 7.7 feet below the surface
3. 10.6 feet below the surface
4. 2.9 feet below the surface
Grade 7 Positive and Negative Numbers CCSS: 7.NS.A.1c
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