Y7 KO Quiz - Manipulating Expressions

 $17x$  is an example of a...

• Identity

• Expression

• Equation

• Formula

 $5x+7=22$  is an example of a...

• Identity
  

• Expression

• Equation

• Formula

Identify the variable in the expression: $17y\ -6$  

• 17

• y

• -

• 6

Identify the term in the expression:  $9a+4$  

• 9

• a

• 9a

• +

Identify the coefficient in the expression: $7b^2-3$  

• 7

•  $b^2$  

• -

• 3

I think of a number. I multiply it by 7, then subtract 10 from my answer.

Write an expression for the above statement.

• $7\left(x-10\right)$

• $7\times x-10$

• 
  

  $7x-10$
  

• $x7-10$

I think of a number. I add 15 to it, then divide my answer by 3.

Write an expression for the above statement.

• $\frac{x+15}{3}$

• $\left(x+15\right)\div3$

• $x+\frac{15}{3}$

• $\frac{x}{3}+15$

 $5x\$  and  $23x$  are like terms

• True

• False

 $13a^2$  and $12a$  are like terms

• True

• False

Simplify  $5b+3c+2b+8c$  

•  $18bc$  

•  $18b^2c^2$  

•  $7b^2+11c^2$  

•  $7b+11c$