Understand addition as putting together and adding to, and understand subtraction as taking apart and taking
from.
1.0 Represent addition and subtraction with objects, fingers, mental images, drawings,2 sounds (e.g., claps), acting out
situations, verbal explanations, expressions, or equations.
|
Represent and solve problems involving addition and subtraction.
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.
|
Represent and solve problems involving addition and subtraction.
1. Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking
from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations
with a symbol for the unknown number to represent the problem.
|
Represent and solve problems involving multiplication and division.
Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each.
For example, describe a context in which a total number of objects can be expressed as 5 × 7.
|
1.0 Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 x 7 as a statement that 35 is 5 times as many as
7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations .
|
Write and interpret numerical expressions.
1.0 Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
|
Estimator 4
