Sample Task Analysis (from dbi1p7 removed)

(adding two two-digit numbers)

Step 1:	Add the numbers in the one’s column.
Step 2:	If the sum is less than 10, write the number under the one’s column. If the sum is 10 or greater, write the one’s digit under the one’s column and write the ten’s digit on top of the ten’s column.
Step 3:	Add the numbers in the ten’s column. If applicable, be sure to include the number you carried.
Step 4:	Write the sum of the numbers under the ten’s column.