Adding and subtracting rational numbers

Which expression is equivalent to

-4.9 - (-3.55)

• 4.9 + 3.55

• -4.9 - 3.55

• -4.9 + 3.55

• -4.9 + (-3.55)

Tags

CCSS.7.NS.A.1B

Which equation is true?

• 10/12 + (-10/12) = 0

• 10/12 + (-10/12) = -1

• 36 + -36 = 72

• 36 + -36 = -72

Tags

CCSS.7.NS.A.1B

To solve the expression below, you should first rewrite it using Keep Change Change (or add the opposite so that it becomes:

 $\frac{4}{9}\ -\ \left(\frac{-3}{9}\right)$  

•  $\frac{4}{9}\ +\ \left(\frac{-3}{9}\right)$  

•  $\frac{4}{9}\ +\ \left(\frac{+3}{9}\right)$  

•  $\frac{-4}{9}\ +\ \left(\frac{-3}{9}\right)$  

•  $\frac{-4}{9}\ +\ \left(\frac{+3}{9}\right)$  

Tags

CCSS.7.NS.A.1B

The additive inverse of -7/19 is

• -7/19

• 7/19

• 19/7

• -19/7

Tags

CCSS.7.NS.A.1B

What is the rule for subtracting Rational Numbers?

Tags

CCSS.7.NS.A.1B

Which expression illustrates the Additive Inverse property?

• 7 + 0 = 7

• -2 + (-2) = -4

• -5 + 5 = 0

• 4 + 1/4 = 4 1/4

Tags

CCSS.7.NS.A.1B

Additive Inverse: Adding a number and its opposite will equal zero. What is an example of this definition?

• 3 and 3

• -3 and -3

• 2 and -3

• -3 and 3

Tags

CCSS.7.NS.A.1B

Identify the additive inverse of

-7

• -7
• 7

Tags

CCSS.7.NS.A.1B

Tags

CCSS.7.NS.A.1B

 $-\frac{4}{5}+\frac{4}{5}$  

•  $\frac{8}{5}$  

•  $-1\frac{3}{5}$  

•  $1$  

• 0

Tags

CCSS.7.NS.A.1B