1.
Find –2 – (–7).
A.
–5
B.
5
C.
9
D.
–9
Hint
2.
Find an addition and subtraction equation that represents the number lines below.
A.
–6 + 7 = 1
–6 – –7 = 1
B.
1 + –6 = –5
1 – 6 = –5
C.
–6 + 1 = 5
–6 – –1 = 5
D.
–6 + –1 = –7
–6 – 1 = –7
Hint
3.
Find the sum. Then find a subtraction equation that is equivalent to the addition equation.
–8 + –3
A.
–8 + –3 = 11
–8 – 3 = 11
B.
–8 + –3 = –11
–8 – 3 = 11
C.
–8 + –3 = –11
–8 – 3 = –11
D.
–8 + –3 = –5
–8 – 3 = –5
Hint
4.
The formula for converting Celsius temperatures (
C
) to Kelvin (
K
) temperatures is
K
=
C
+ 273. Find the Kelvin scale temperature of –98°
C
.
A.
–371
K
B.
–175
K
C.
175
K
D.
371
K
Hint
5.
Find the number you can put in the blank to make a sum less than zero.
A.
Answer must be less than
.
B.
Answer must be less than or equal to
.
C.
Answer must be greater than
.
D.
Answer must be less than
.
Hint