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Standard 3.N.9 - Practice subtracting objects from 1 to 10.

Included Skills:

Demonstrate an understanding of addition and subtraction of numbers with answers to 1000 (limited to 1-, 2- and 3-digit numerals), concretely, pictorially and symbolically, by:
using personal strategies for adding and subtracting with and without the support of manipulatives.
creating and solving problems in context that involve addition and subtraction of numbers.
Model the addition of two or more given numbers, using concrete or visual representations, and record the process symbolically.
Model the subtraction of two given numbers, using concrete or visual representations, and record the process symbolically.
Create an addition or subtraction story problem for a given solution.
Determine the sum of two given numbers, using a personal strategy; e.g., for 326 + 48, record 300 + 60 + 14.
Determine the difference of two given numbers, using a personal strategy; e.g., for 127 – 38, record 38 + 2 + 80 + 7 or 127 – 20 – 10 – 8.
Refine personal strategies to increase their efficiency.
Solve a given problem involving the sum or difference of two given numbers.