Adding and subtracting rational numbers

Select all the equivalent expressions: 
 $\frac{1}{2}-\left(-\frac{3}{4}\right)-5$  

•  $-\frac{15}{4}$  

• -3.75

•  $-1\ \frac{1}{4}$  

• 2.34

Tags

CCSS.7.NS.A.1D

Tags

CCSS.7.NS.A.1D

8 + (-0.3) - 12 3/4 =

• -2.56

• 6.89

• -6.04

• -5.05

Tags

CCSS.7.NS.A.1D

3/4 ( -a - 4

• -3/4a - 3

• 3/4-a + 3

• -3/4-a - 3

• 3/4a + 3

Tags

CCSS.7.NS.A.1D

Calculate $\left(+0.5\right)-\left(-2.4\right)$  

•  $+2.9$  

•  $-1.9$  

•  $-2.3$  

•  $+2.8$  

Tags

CCSS.7.NS.A.1D

Between which two lines does the mistake occur?

• Lines 1 and 2

• Lines 2 and 3

• Lines 3 and 4

• There is no mistake! This answer is correct!

Tags

CCSS.7.NS.A.1D

6.59 + (−7.8) − (−2.41)

• 16.8
• 11.98
• -3.62
• 1.2

Tags

CCSS.7.NS.A.1D

 $-\frac{1}{4}\left(44y-8\right)$  

• -11y - 2

• 11y -2

• 11y + 2

• -11y + 2 

Tags

CCSS.7.NS.A.1D

−7.34 − (−5.51)

(a)  

Tags

CCSS.7.NS.A.1D

The sum of two positive numbers is always positive.

• True

• False

Tags

CCSS.7.NS.A.1D