Where can I read the official document?

Montana Mathematics Content Standards (2026)

Grade 1
Other Montana Math sets
Kindergarten
Standards for Mathematical Practice
Grade 2
Grade 3
Grade 4
Grade 5
Grade 6
Grade 7
Grade 8
High School

1
Use addition and subtraction within 20 to solve of all types. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities.MT.1.OA.1
2
Solve problems in context that call for addition of three whole numbers with a sum less than or equal to 20 in context of all types. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities.MT.1.OA.2
3
Flexibly compose and decompose numbers to add and subtract.MT.1.OA.3
4
Understand subtraction as an unknown-addend problem.MT.1.OA.4
5
Relate counting to addition and subtraction.MT.1.OA.5
6
Flexibly, accurately, and efficiently add and subtract within 10.MT.1.OA.6
7
Use multiple strategies to add and subtract within 20.MT.1.OA.7
8
Understand the meaning of the equal sign and determine if equations are true or false.MT.1.OA.8
9
Determine the unknown number in an addition or subtraction equation relating to three numbers.MT.1.OA.9

1
Flexibly count, read, write, and represent numbers to 120.MT.1.NBT.1
2
Understand that ten is a unit composed of ten ones and that a two-digit number represents tens and ones.MT.1.NBT.2
3
Compare two two-digit numbers using comparison symbols >, =, and <.MT.1.NBT.3
4
Build a foundation for addition within 100 by:MT.1.NBT.4
1. a
  *Build a foundation for addition within 100 by* adding two-digit to one-digit numbers.MT.1.NBT.4.a
2. b
  *Build a foundation for addition within 100 by* adding multiples of 10 to two-digit numbers.MT.1.NBT.4.b
5
Using place value, given a two-digit number, find 10 more or 10 less than the number.MT.1.NBT.5
6
Subtract multiples of 10 from a two-digit number.MT.1.NBT.6

1
Order three objects by length and compare the lengths of two objects indirectly by using a third object. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities.MT.1.MD.1
2
Express the length of an object as a whole number of length units. Understand that the measurement of an object is the number of same-size length units that span it with no gaps or overlaps.MT.1.MD.2
3
Tell and write time in hours and half-hours using analog and digital clocks.MT.1.MD.3
4
Identify the value of coins.MT.1.MD.4
5
Organize, represent, and interpret data with up to three categories by:MT.1.MD.5
1. a
  *Organize, represent, and interpret data with up to three categories by* asking and answering questions about the total number of data points.MT.1.MD.5.a
2. b
  *Organize, represent, and interpret data with up to three categories by* identifying how many are in each category.MT.1.MD.5.b
3. c
  *Organize, represent, and interpret data with up to three categories by* analyzing differences between categories.MT.1.MD.5.c

1
Distinguish between defining attributes versus nondefining attributes.MT.1.G.1
2
Build and draw shapes to possess defining attributes.MT.1.G.2
3
Compose new shapes using two- and three-dimensional shapes.MT.1.G.3
4
Partition circles and rectangles into two and four equal shares. Describe the shares using the words: halves, fourths, and quarters.MT.1.G.4

What grade levels do these standards cover?: Grade 1
Where can I read the official document?: Montana Mathematics Content Standards (2026)

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