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Unit 1, Lesson 1

Practice making ten and adding to ten

EngageNY 60 min(s)

In this lesson, students review ways to make and take from ten (e.g., 9 + 1 = 10, 10 - 9 = 1), ways to use Say Ten counting on the Rekenrek (eleven or "ten 1"), teen numbers as 10 + n, and how to decompose ten in different ways by rolling a die and recording number bonds within 10.

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Other lessons from Unit 1 in Grade 2 by EngageNY

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Unit 1, Lesson 2

Practice making the next ten and adding to a multiple of ten

60 min(s)

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Unit 1, Lesson 3

Add and subtract like units

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Unit 1, Lesson 4

Make a ten to add within 20

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1 Content Standard is aligned with this lesson

2.OA.B.2

Major StandardsSupporting StandardsAdditional Standards

Standard 2.OA.B.2

Fluently add and subtract within 20 using mental strategies (See standard 1.OA.6 for a list of mental strategies). By end of Grade 2, know from memory all sums of two one-digit numbers.

Part of Major Cluster 2.OA.B

1 Math Practice Standard is aligned with this lesson

Standard MP.8

Look for and express regularity in repeated reasoning.

Prerequisites for 2.OA.B.2

1st Grade

1.OA.C.6

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

Upcoming Standards for 2.OA.B.2

2nd Grade

2.NBT.B.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

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