Math Curriculum

1st Grade

Course Purpose:

Students will use numbers to represent, solve, and apply the properties and relationship of addition and subtraction with use of place value to solve problems. Students will fluently add and subtract within 20 as they extend the counting sequence.

Outcomes and Components:

M.1.5

 

Students will apply  addition and subtraction strategies to add and subtract within 100.

Pacing  

Instruct/

Assess

 

Component Code

 

Component

Standard(s)

    M.1.5.1   Explain that in adding two-digit numbers, one adds tens and tens, ones and ones and sometimes it is necessary to compose a ten. 1.NBT.C.4
    M.1.5.2   Add a two-digit number to a one-digit number within 100 using strategies to include concrete models, drawings, place value, and the relationship between addition and subtraction. 1.NBT.C.4
    M.1.5.3   Relate strategies used in solving addition problems to a written method and explain the reasoning used. 1.NBT.C.4
    M.1.5.4   Given a two-digit number, mentally find 10 more or 10 less than the number without having to count and explain the reasoning used and apply this to adding a two-digit number and a multiple of ten. 1.NBT.C.5
    M.1.5.5   Subtract, within the range 10-90, multiples of 10 from multiples of 10 using concrete models, drawings, place value, and properties of operations. 1.NBT.C.6
    M.1.5.6   Relate strategies used in solving subtraction problems to a written method and explain the strategy used. 1.NBT.C.6

Academic Vocabulary: Count, explain, reason, apply

Content Vocabulary: Tens and ones, two-digit, place value, add, subtract, mental math, place value, sum, difference