Number and Operations: Students will compute using addition and subtraction.

1.N.4.aAdd and subtract within 20, using flexible strategies such as counting on or counting back, making ten, using ten, and using doubles and near doubles.1.N.4.bEfficiently, flexibly, and accurately add and subtract within 10.1.N.4.cFind the difference between two numbers that are multiples of 10, ranging from 10 to 90 using concrete models, drawings, or strategies, and write the corresponding equation.1.N.4.dMentally find 10 more or 10 less than a two-digit number without having to count and explain the reasoning used.1.N.4.eAdd within 100, including adding a two-digit number and a one-digit number, adding a two-digit number and a multiple of ten, using concrete models, drawings, and strategies that reflect an understanding of place value, the relationship between addition and subtraction, and the properties of operations. Relate the strategy to a written method and explain the reasoning used to solve.1.N.4.fUnderstand that in adding two-digit numbers, one adds tens and tens, ones and ones; sometimes it is necessary to compose a ten.1.N.4.gSubtract multiples of ten from two-digit numbers (positive or zero differences) using concrete models, drawings, and strategies that reflect an understanding of place value, the relationship between addition and subtraction, and the properties of operations. Relate the strategy to a written method and explain the reasoning used to solve.
Goblins

1-on-1 AI tutoring aligned to 1.N.4. Instant help for students, real-time insights for teachers.

Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.

Free for teachers, forever →