Adding and subtracting rational numbers

What is the simplified version of this expression?  $7\left(5x-1\right)$  

•  $35x+7$  

•  $35x-1$  

•  $35x-7$  

•  $-35x-7$  

Tags

CCSS.7.NS.A.1D

Tags

CCSS.7.NS.A.1D

 $-1\frac{7}{8}+\left(-3\frac{1}{2}\right)=$  

•  $5\frac{3}{8}$  
  

•  $-5\frac{3}{8}$  
  

•  $1\frac{5}{8}$  
  

•  $-1\frac{5}{8}$  
  

Tags

CCSS.7.NS.A.1D

One of the best test-taking strategies is:

• read the question quickly
• circle each word in the question
• show work for every problem
• use your mental math strategies only

Tags

CCSS.7.NS.A.1D

When do we use the keep, change, change rule?

• Addition

• Subtraction

• Multiplication

• Division

Tags

CCSS.7.NS.A.1D

 $\frac{1}{4}-\frac{6}{12}+\left(-\frac{24}{25}\right)$  
Select all numbers that are equivalent.

• -1.21

• 1.21

•  $-\frac{121}{100}$  

•  $\frac{45}{25}$  

Tags

CCSS.7.NS.A.1D

1.When solving the equation 4(3x²+2) -9 = 8x² +7, Emily wrote 4(3x² +2) =8x² +16 as her first step. Which property justifies Emily's first step?

• addition property of equality

• commutative property of addition

• multiplication property of equality

• distributive property of multiplication over addition

Tags

CCSS.7.NS.A.1D

Is this statement true or false?

 $6>-3$  

• True

• False

Tags

CCSS.7.NS.A.1D

The sum of a rational number and a rational number is rational.

• Always true

• Sometimes true

• Never true

Tags

CCSS.7.NS.A.1D

Tags

CCSS.7.NS.A.1D