Arizona Standards

Arizona 1st Grade Math Standards

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

30 standards

Operations and Algebraic Thinking

8 standards

1.OA.A.1

Add and subtract within 20 to solve story problems where the missing number can be in any position, using objects, drawings or an equation with a box for it.

1.OA.A.2

Solve story problems that add three whole numbers with a total of 20 or less, using objects, drawings or an equation with a box for the missing number.

1.OA.B.3

Add and subtract within 20 by using the order and grouping properties of addition, like 8 + 3 = 3 + 8, without needing the formal names.

1.OA.B.4

Treat subtraction as finding a missing addend within 20, like solving 10 - 8 by asking what number added to 8 makes 10.

1.OA.C.5

Connect counting to adding and subtracting, like counting on 2 from 6 to find 6 + 2, or counting back 2 to find 8 - 2.

1.OA.C.6

Add and subtract within 10 quickly and accurately, like knowing 7 + 3 and 9 - 4 without counting.

1.OA.D.7

Explain that the equal sign means both sides have the same value, and decide whether addition and subtraction equations like 5 + 2 = 2 + 5 are true or false.

1.OA.D.8

Find the missing number in an addition or subtraction equation with three whole numbers, like the number that goes with 8 to make 11.

Number and Operations in Base Ten

6 standards

1.NBT.A.1

Count to 120 by ones, twos and tens starting from any number below 100, and read, write and use numerals for amounts in that range.

1.NBT.B.2

Explain that a two-digit number's digits show tens and ones, seeing 10 as one ten, 11 to 19 as a ten plus some ones, and 10, 20 up to 90 as groups of tens.

1.NBT.B.3

Compare two two-digit numbers by looking at their tens first, then their ones, and record the answer with >, = or <.

Common Core 1.NBT.3

1.NBT.C.4

Show understanding of adding within 100 by linking objects or drawings to place value, properties or subtraction, then writing the matching equation.

1.NBT.C.5

Find 10 more or 10 less than a two-digit number in their head without counting, like 57 and 37 for 47.

1.NBT.C.6

Subtract multiples of 10 between 10 and 90 with answers of zero or more, like 70 - 30, using models or place value strategies, and record it in writing.

Measurement and Data

5 standards

1.MD.A.1

Put three objects in order from shortest to longest, and compare two objects by measuring each against a third one.

Common Core 1.MD.1

1.MD.A.2

Measure how long an object is by laying same-size units end to end with no gaps or overlaps, and give the length as a whole number, like 6 paper clips long.

Common Core 1.MD.2

1.MD.B.3a

Tell and write the time to the hour and half-hour on both clock faces and digital clocks.

Common Core 1.MD.3

1.MD.B.3b

Name pennies, nickels, dimes and quarters and tell how many cents each coin is worth.

1.MD.C.4

Sort data into up to three groups, show it in a chart or picture, and answer how many in all, how many in each group, and how many more or fewer.

Common Core 1.MD.4

Geometry

3 standards

1.G.A.1

Tell apart the features that define a flat shape, like 3 sides and closed for a triangle, from ones that do not, like color or size, and build and draw such shapes.

1.G.A.2

Put together flat shapes or solid shapes to make a new combined shape, like two squares joined into a rectangle.

1.G.A.3

Split circles and rectangles into 2 or 4 equal shares called halves, fourths or quarters, see the whole as 2 or 4 shares, and see more shares make smaller ones.

Standards for Mathematical Practice

8 standards

1.MP.1

Figure out what a story problem within 20 is asking and stick with it, trying another strategy like a number line when the first one stalls.

1.MP.2

Move between a story and its numbers, like writing 9 + 4 = 13 for a problem and then explaining what 13 means in the story.

1.MP.3

Explain a strategy for adding or comparing two-digit numbers with cubes or drawings, and ask questions about a classmate's way.

1.MP.4

Represent everyday situations with drawings, number lines or equations, like writing 12 - 5 to show 5 of 12 crayons being lost.

1.MP.5

Choose tools like ten frames, base-ten blocks, number lines or hundred charts that fit the problem at hand.

1.MP.6

Use the equal sign correctly and name tens, ones and shapes carefully, checking that counts and measurements are accurate.

1.MP.7

Use number structure, like making a ten to solve 8 + 6 or seeing 3 + 7 and 7 + 3 as the same total.

1.MP.8

Notice repeated results and use shortcuts, like seeing that adding 10 to any number changes only the tens digit.

The official Arizona documents

Arizona Mathematics Standards: First Grade · adopted December 2016 · since 2018-19

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