### Examples

Determine the unknown in the equation .### Clarifications

*Clarification 1:*Instruction extends the development of algebraic thinking skills where the symbolic representation of the unknown uses any symbol other than a letter.

*Clarification 2:* Problems include having the unknown on either side of the equal sign.

*Clarification 3:* Addition and subtraction are limited to sums up to 100 and related differences. Refer to Situations Involving Operations with Numbers (Appendix A).

**Subject Area:**Mathematics (B.E.S.T.)

**Grade:**2

**Strand:**Algebraic Reasoning

**Date Adopted or Revised:**08/20

**Status:**State Board Approved

## Related Courses

## Related Access Points

## Related Resources

## Formative Assessments

## Original Student Tutorial

## MFAS Formative Assessments

Students find the missing addend in an addition equation relating five whole numbers.

Students find the missing number in an equation relating four whole numbers that involves addition and subtraction.

Students find the missing number in an equation relating four whole numbers.

## Original Student Tutorials Mathematics - Grades K-5

Help Tyler balance equations by finding the unknown number in this interactive tutorial.

## Student Resources

## Original Student Tutorial

Help Tyler balance equations by finding the unknown number in this interactive tutorial.

Type: Original Student Tutorial