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Your search returned 4 results.
Subject Area: Mathematics (NYS P-12 Common Core)
Grades: Elementary, 1st Grade
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.
Subject Area: Mathematics (NYS P-12 Common Core)
Grades: Elementary, 1st Grade
Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the
problem.
Subject Area: Mathematics (NYS P-12 Common Core)
Grades: Elementary, 1st Grade
Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete
models or drawings and strategies based on place value, properties of
operations, and/or the relationship between addition and subtraction;
relate the strategy to a written method and explain the reasoning used.
Understand that in adding two-digit numbers, one adds tens and tens, ones
and ones; and sometimes it is necessary to compose a ten.
Subject Area: Mathematics (NYS P-12 Common Core)
Grades: Elementary, 1st Grade
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
Your search returned 4 results.
