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Missouri Standards

Missouri 1st Grade Math Standards

All 30 Missouri math standards for 1st grade, each explained in plain English. The official wording is in Missouri Department of Elementary and Secondary Education's document, linked at the end of this page.

30 standards

Number Sense

4 standards
1.NS.A.1
Count up to 120 from any starting number below 120, like 87, 88, 89 and on.
1.NS.A.2
Read and write numerals up to 120 and write the number that shows how many objects are in a set.
1.NS.A.3
Count backward to 1 from any starting number up to 20, like 17, 16, 15, 14.
1.NS.A.4
Skip count by fives up to 100, starting from any multiple of 5, like 35, 40, 45.

Number Sense and Operations in Base Ten

7 standards
1.NBT.A.1
Know that ten ones make one ten, like a bundle of 10 sticks counted as a single ten.
1.NBT.A.2
Know that a two-digit number is made of tens and ones, like 47 is 4 tens and 7 ones.
1.NBT.A.3
Decide which of two two-digit numbers is bigger and record the comparison with the greater than, equal or less than sign.
1.NBT.A.4
Count by tens up to 120 from any starting number, like 23, 33, 43, 53.
1.NBT.B.5
Find sums up to 100, like 46 plus 8 or 32 plus 40.
1.NBT.B.6
Find 10 more or 10 less than a number in your head, without counting, like 10 more than 57 is 67.
1.NBT.B.7
Add or subtract a multiple of ten with a two-digit number and explain why the answer works, like 64 plus 30 or 80 minus 50.

Relationships and Algebraic Thinking

8 standards
1.RA.A.1
Solve word problems by adding and subtracting with numbers up to 20, like how many apples are left.
1.RA.A.2
Solve word problems that add three whole numbers with a total of 20 or less, like 4 plus 7 plus 6.
1.RA.A.3
Explain that the equal sign means both sides are the same amount, and decide whether addition and subtraction equations are true or false, like 6 = 6 + 0.
1.RA.A.4
Fill in the missing number in an addition or subtraction sentence that links three numbers, like 8 plus what number equals 11.
1.RA.B.5
Use number properties as tools to add and subtract, like knowing 8 plus 3 equals 3 plus 8 or grouping 2 plus 6 plus 4 as 2 plus 10.
1.RA.B.6
Show that a subtraction problem can be solved by finding a missing addend, like solving 10 minus 8 by asking 8 plus what makes 10.
1.RA.C.7
Add and subtract with numbers up to 20, like 13 minus 5 or 9 plus 7.
1.RA.C.8
Add and subtract within 10 quickly and accurately, like recalling 6 plus 4 or 9 minus 3 without counting.

Geometry and Measurement

9 standards
1.GM.A.1
Tell apart the features that define a shape, like three sides on a triangle, from those that do not, like color, and build and draw shapes with the defining ones.
1.GM.A.2
Combine and split flat and solid shapes to see how parts make a whole, and describe both the starting shapes and the new shape, like two triangles making a square.
1.GM.A.3
Recognize flat and solid shapes when they are turned or seen from different views, like a cylinder lying on its side.
1.GM.A.4
Split circles and rectangles into two or four equal parts and describe them in words as halves, fourths or quarters of the whole.
1.GM.B.5
Put three or more objects in order from shortest to longest or longest to shortest.
1.GM.B.6
Compare how long two objects are by measuring each against a third object, like a piece of string.
1.GM.B.7
Measure how long or far something is by lining up same-size objects end to end, like paper clips.
1.GM.C.8
Tell and write the time to the hour and half-hour on both clock faces and digital clocks.
Common Core 1.MD.3
1.GM.C.9
Know how much a penny, nickel, dime and quarter are each worth, like a dime is worth 10 cents.

Data and Statistics

2 standards
1.DS.A.1
Gather, sort and show data in up to three categories, like a tally of favorite fruits.
1.DS.A.2
Read object graphs, picture graphs, T-charts and tally marks to figure out what the data shows, like which choice got the most votes.

The official Missouri documents

The plain-English lines on this page are EMStudio's own explanations of Missouri's standards, not the official wording, which Missouri Department of Elementary and Secondary Education publishes in the documents above. Codes and strand names identify each standard.