## ◂Math Worksheets and Study Guides First Grade. One Less, One More

### The resources above correspond to the standards listed below:

#### Nebraska Core Academic Content Standards

NE.MA.1.1. NUMBER: Students will communicate number sense concepts using multiple representations to reason, solve problems, and make connections within mathematics and across disciplines.
MA.1.1.1. Numeric Relationships: Students will demonstrate, represent, and show relationships among whole numbers within the base-ten number system.
MA.1.1.1.a. Count to 120 by ones and tens, starting at any given number.
MA.1.1.2. Operations: Students will demonstrate the meaning of addition and subtraction with whole numbers and compute accurately.
MA.1.1.2.a. Fluently (i.e., automatic recall based on understanding) add and subtract within 10.
MA.1.1.2.b. Add and subtract within 20, using a variety of strategies (e.g., count on to make a ten).
MA.1.1.2.e. Add within 100, which may include adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of ten using concrete models, drawings, and strategies which reflect understanding of place value.
NE.MA.1.2. ALGEBRA: Students will communicate algebraic concepts using multiple representations to reason, solve problems, and make connections within mathematics and across disciplines.
MA.1.2.3. Applications: Students will solve real-world problems involving addition and subtraction.
MA.1.2.3.a. Solve real-world problems involving addition and subtraction within 20 in situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all parts of the addition or subtraction problem (e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem).