Proficiency Indicators for 1.Mod2.AD1

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Common Addition and Subtraction Problem Types

Achievement Descriptors: Proficiency Indicators

1.Mod2.AD1 Represent and solve word problems within 20 involving grades K and 1 addition and subtraction problem types.

RELATED CCSSM 1.OA.A.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.2

2See [CCSSM] Glossary, Table 1.

Partially Proficient Proficient Highly Proficient

Represent word problems by using drawings or objects and solve word problems within 10 involving add to with result unknown, take from with result unknown, and put together and take apart with total unknown problem types.

Draw or use cubes to show the story. 8 bugs are on a flower. 3 bugs fly away. How many bugs are on the flower now?

There are bugs on the flower now.

Represent word problems by using drawings and a number sentence and solve word problems within 20 involving add to with result unknown, take from with result unknown, put together and take apart with total unknown, add to with change unknown, take from with change unknown, and put together and take apart with addend unknown.

Read

12 bugs are on a flower. Some bugs fly away. Now there are 9 bugs on the flower. How many bugs flew away?

Draw

Write

bugs flew away.