Expressions and Equations

3 - 2a + 3a + 5a

• 5a+3
• 5a-3
• 6a + 3
• 8a+3

Tags

CCSS.6.EE.A.2

CCSS.6.EE.A.3

CCSS.6.EE.A.4

CCSS.6.EE.B.6

472 students are going on a field trip.  120 students will be returning home and the rest will be spending the night in cabins. If a cabin sleeps 8 people, how many cabins need to be rented?

• 8x + 120 = 472
• 472 + 120 = 8x
• 120 - 8x = 472
• 8x - 120 = 472

-2m + 3 = -55

• 24.5
• -24.5
• 29
• -29

The objective when solving an equation is to.....

• Check the solution
• Guess and Check
• Isolate the variable
• Hope you get the right answer

Tags

CCSS.7.EE.B.4A

A group of variables, constants and operations that an include an equal sign

• Equation
• Constant
• Expression
• Variable

For the equation - 0.4x + 10 = - 20 Monkey thinks the first step is to subtract 10 from both sides and then add 0.4 to both sides to isolate the variable. What error did she make?

• You are supposed to add 10 to both sides
• You are supposed to divide both sides by - 0.4
• You are supposed to divide both sides by 0.4
• No error, with a name like Monkey how could she be wrong

What is the first step to solve this equation:
11 - 3x = 44

• Subtract 11 from both sides
• Divide  - 3 on both sides
• Add 3 to both sides
• Add 11 to both sides

Tags

CCSS.7.EE.B.4A

What is the simplest form of this expression
4x-6a+5a-2x

• 2x-1a
• 21xa
• 6x+11a

Tags

CCSS.6.EE.A.3

CCSS.6.EE.A.4

Factor out the GCF
3x+15

• 3(x+15)
• 3(x+3)
• 3(x+5)

Maria has 25 dollars.  She has to buy a gallon of milk which costs $3.50.  She wants to spend the rest of her money on cereal.  If each box of cereal costs $4.50, how many can she purchase?

• 4 boxes
• 5 boxes
• 6 boxes
• 7 boxes