MA19.2.1
Use addition and subtraction within 100 to solve one- and two-step word problems by using drawings and equations with a symbol for the unknown number to represent the problem.
Use addition and subtraction within 100 to solve one- and two-step word problems by using drawings and equations with a symbol for the unknown number to represent the problem.
UP:MA19.2.1
Vocabulary
- One-step word problems
- Two-step word problems
Knowledge
Students know:
- addition and subtraction strategies to solve one- and two-step word problems within a 100.
Skills
Students are able to:
- represent quantities and operations (addition & subtraction) physically, pictorially, or symbolically.
- strategically use a variety of representations to solve addition and subtraction word problem.
- use informal and mathematical language to communicate the connections among addition and subtraction.
- accurately compute sums and differences.
- use symbols to represent unknown quantities in equations.
Understanding
Students understand that:
- addition is both putting together and adding to.
- subtraction is taking apart, taking from, and comparisons.
- mathematical problems can be solved using a variety of strategies, models, representations.
- variables represent unknown quantities when representing mathematical situations algebraically.
