Developing, discussing, and using efficient, accurate, and generalizable methods to add within 100 and subtract multiples of 10.

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### Related standards

#### More specific sub-standards

Students compare whole numbers (at least to 100) to develop understanding of and solve problems involving their relative sizes.

Students recognize whole numbers between 10 and 100 as tens and ones (especially recognizing the numbers 11 to 19 as composed of a ten and some ones).

#### Similar standards elsewhere

Students develop, discuss, and use efficient, accurate, and generalizable methods to add within 100 and subtract multiples of 10. They compare whole numbers (at least to 100) to develop understanding of and solve problems involving their relative sizes. They think of whole numbers between 10 and 100 in terms of tens and ones (especially recognizing the numbers 11 to 19 as composed of a ten and some ones). Through activities that build number sense, they understand the order of the counting numbers and their relative magnitudes.

Students develop, discuss, and use efficient, accurate, and generalizable methods to add within 100 and subtract multiples of 10. They compare whole numbers (at least to 100) to develop understanding of and solve problems involving their relative sizes. They think of whole numbers between 10 and 100 in terms of tens and ones (especially recognizing the numbers 11 to 19 as composed of a ten and some ones). Through activities that build number sense, they understand the order of the counting numbers and their relative magnitudes.

Students develop, discuss, and use efficient, accurate, and generalizable methods to add within 100 and subtract multiples of 10. They compare whole numbers, at least to 100, to develop understanding of and solve problems involving their relative sizes. They think of whole numbers between 10 and 100 in terms of tens and ones, especially recognizing the numbers 11 to 19 as composed of a ten and some ones. Through activities that build number sense, they understand the order of the counting numbers and their relative magnitudes.

Students compare whole numbers (at least to 100) to develop understanding of and solve problems involving their relative sizes.

Students develop, discuss, and use efficient, accurate, and generalizable methods to add within 100 and subtract multiples of 10. They compare whole numbers (at least to 100) to develop understanding of and solve problems involving their relative sizes. They think of whole numbers between 10 and 100 in terms of tens and ones (especially recognizing the numbers 11 to 19 as composed of a ten and some ones). Through activities that build number sense, they understand the order of the counting numbers and their relative magnitudes.