Montana Standards

Montana 1st grade math standards

Every 1st grade math standard in the Montana Mathematics Content Standards, in Montana's order, with the Lux lessons that teach it.

Operations and Algebraic Thinking

MT.1.OA.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.
Taught inRead the story first Act out the story How many were added?How many at the start?and 2 more
MT.1.OA.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.
Taught inAny order, same total Find the ten first Facts that go together Three numbers in a story
MT.1.OA.3
Flexibly compose and decompose numbers to add and subtract.
Taught inMake a ten to add Subtract back to ten Ways to make 10 Facts that go togetherand 4 more
MT.1.OA.4
Understand subtraction as an unknown-addend problem.
Taught inSubtraction is a missing part Which addition helps?
MT.1.OA.5
Relate counting to addition and subtraction.
Taught inCount on to add, back to subtract
MT.1.OA.6
Flexibly, accurately, and efficiently add and subtract within 10.
Taught inMake a ten to add Subtract back to ten Ways to make 10 Facts that go togetherand 8 more
MT.1.OA.7
Use multiple strategies to add and subtract within 20.
Taught inMake a ten to add Subtract back to ten Ways to make 10 Facts that go togetherand 3 more
MT.1.OA.8
Understand the meaning of the equal sign and determine if equations are true or false.
Taught inNot every equation is true What the equal sign means True or false?The total can come first
MT.1.OA.9
Determine the unknown number in an addition or subtraction equation relating to three numbers.
Taught inThe missing number anywhere A missing start Check by putting it back Both sides must match

Number and Operations in Base Ten

MT.1.NBT.1
Flexibly count, read, write, and represent numbers to 120.
Taught inCounting on and back to 120 The end of a row Tens and ones Fifteen is not 51and 3 more
MT.1.NBT.2
Understand that ten is a unit composed of ten ones and that a two-digit number represents tens and ones.
Taught inTens and ones Fifteen is not 51 Expanded form counts tens Many ways to make a numberand 1 more
MT.1.NBT.3
Compare two two-digit numbers using comparison symbols >, =, and <.
Taught inGreater than, less than The tens decide first Numbers on a number line
MT.1.NBT.4.a
Build a foundation for addition within 100 by adding two-digit to one-digit numbers.
Taught inAdding ones to a two-digit number Get to the next ten Twelve ones is a new ten
MT.1.NBT.4.b
Build a foundation for addition within 100 by adding multiples of 10 to two-digit numbers.
Taught inAdding ones to a two-digit number Get to the next ten Twelve ones is a new ten
MT.1.NBT.5
Using place value, given a two-digit number, find 10 more or 10 less than the number.
Taught inOne more, ten more Ten more changes the tens
MT.1.NBT.6
Subtract multiples of 10 from a two-digit number.
Taught inTake away tens Adding tens and ones Ten ones make a ten Trade a ten for ten onesand 4 more

Measurement and Data

MT.1.MD.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.
Taught inLonger, shorter, longest Compare with a third thing Inches and centimeters don’t mix
MT.1.MD.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.
Taught inMeasure with paper clips Bigger units, fewer of them No gaps, no overlaps
MT.1.MD.3
Tell and write time in hours and half-hours using analog and digital clocks.
Taught inTime to the hour Time to the half hour The short hand tells the hour The 6 means 30 minutes
MT.1.MD.4
Identify the value of coins.
Taught inPennies, nickels, dimes, quarters Bigger coin, not bigger value
MT.1.MD.5.a
Organize, represent, and interpret data with up to three categories by asking and answering questions about the total number of data points.
Taught inTally marks in fives The fifth mark crosses Making a pictograph Reading a pictographand 2 more
MT.1.MD.5.b
Organize, represent, and interpret data with up to three categories by identifying how many are in each category.
Taught inTally marks in fives The fifth mark crosses Making a pictograph Reading a pictographand 2 more
MT.1.MD.5.c
Organize, represent, and interpret data with up to three categories by analyzing differences between categories.
Taught inTally marks in fives The fifth mark crosses Making a pictograph Reading a pictographand 2 more

Geometry

MT.1.G.1
Distinguish between defining attributes versus nondefining attributes.
Taught inSides and corners Turned is still a triangle Solid shapes Not every box is a cubeand 2 more
MT.1.G.2
Build and draw shapes to possess defining attributes.
Taught inSides and corners Turned is still a triangle Solid shapes Not every box is a cubeand 2 more
MT.1.G.3
Compose new shapes using two- and three-dimensional shapes.
Taught inShapes from shapes Shapes in the real world
MT.1.G.4
Partition circles and rectangles into two and four equal shares. Describe the shares using the words: halves, fourths, and quarters.
Taught inHalves and fourths Equal parts only Many ways to make halves

All Montana grades

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