Estimating: Number Sense

 $\sqrt{10}$  

Which is a reasonable estimate for the square root shown above? 

 $\sqrt{5}$  is between (a)   and 3.  What number belongs in the blank? 

 $\sqrt{35}\$ Which is true about this number? 

 $\sqrt{8}\ +\ 5$  
Which is a reasonable estimate for the above? 

 $\sqrt{10}\ +\ \pi$  

Which expressions (more than 1 answer) are LESS than the expression above? Use estimation to determine this

 $\frac{5.8}{2}$  

Which is a reasonable estimate for the above expression? 

 $\frac{8}{\sqrt{5}}$  
What is a reasonable estimate for the above expression? 

 $\sqrt{35}\ +\ 4.98$  
Which is a reasonable estimate for the above expression?

How confident do you feel with estimating numbers?