Estimation & Computation
![Estimation](http://3.bp.blogspot.com/_8x1T0_9QhC4/SLB5i-vpiLI/AAAAAAAAD5w/C36SO0F8r58/s400/jelly%2Bbean%2Bjar.jpg)
Estimation
Types
of
Estimation
To Estimate
a Quantity
To Estimate
a Measurement
(length, area, volume)
To Estimate
an Answer
(sum, difference, product, quotient)
Techniques
for
Estimating
Clustering
Front End Adjusting
Rounding
Sustitue a Compatible Number
Algorithms
Division
Multiplication
Lattice Method
Clustering Method
Addition
Model Base 10 Blocks
Standard Algorithm
for Addition
Expanded Algorithm
for Addition
Subtraction
Counting Up
Model Base 10 Blocks
![Mental Computation](http://3.bp.blogspot.com/-gv6J-p6PfLQ/UAy8DPZRArI/AAAAAAAAAB0/F26L9epuquk/s1600/mentalmath.gif)
Mental Computation
Techniques
for
Mental Computation
Addition
Break Apart
Count On
![Subtraction](http://static3.depositphotos.com/1007830/245/i/950/depositphotos_2459108-Icon-subtract.jpg)
Subtraction
Count Back
![Multiplication](http://www.ka-net.org.uk/files/images/style-multiply-hi.png)
Multiplication
Choose Compatibel Numbers