Simplifying algebraic expressions

Which of the following is "similar to"

 $5x^2y$  ?

•  $5xy$  

•  $-xy^2$  

•  $-x^2y$  

•  $x^2+y$  

Simplify

 $a^2-ab+2a^2+2ab$  

•  $3a^2+2ab$  

•  $a^2+ab$  

•  $4a^2b$  

•  $3a^2+ab$  

Simplify

 $c+2cd-cd+5+c$  

•  $2c+cd+5$  

•  $2c+2cd+5$  

•  $3cd+5$  

•  $8cd$  

Simplify the following

 $2xy\times xy$  

•  $2xy$  

•  $4xy$  

•  $2x^2y$  

•  $2x^2y^2$  

Simplify

 $5m^2\times3m\times2$  

•  $15m^3$  

•  $30m^3$  

•  $15m+2m^2$  

•  $30m^2$  

 $-p\times2pq\times5qp\times p$  

•  $10pq$  

•  $-10p^4q^2$  

•  $10p^4q^2$  

•  $-10p^3q^3$  

Simplify

 $\frac{2x}{10}$  

•  $5x$  

•  $\frac{x}{5}$  

•  $\frac{5x}{2}$  

•  $\frac{2x}{5}$  

Simplify

 $\frac{2h^2i^3}{h^4i}$  

•  $\frac{2i^2}{h^2}$  

•  $\frac{2i^3}{h^2}$  

•  $\frac{2}{h^2}$  

•  $\frac{2}{h^2i}$  

Which expression shows that Tina's age, t, is 3 years more than Michael's age, m?

• $a=t+m+3$

• $m+t=3$

  
  

• $m=t+3$
  

• $t=m+3$
  

If you have h hours of surveys to complete in an n hour school day, how many hours are remaining?

• $\frac{n+h}{2}$

• $n+h$

• $h-n$

• $n-h$