First Grade Mathematics Content Standards
First grade students are expected to:
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Arithmetic and Number Sense
- Count, read, and write whole numbers to 100
- Count by 2s, 5s, 10s to 100 ( Example: Which number is missing? 24, 26, 28, 30, ___, ___, 36, ___, 40 15, 20, 25, 30, ___, ___, 45, ___, 55)
- Compare and order whole numbers to 100 by using the symbols for less than, equal to, or greater than (<, =, >) (Example: Which of the following are correct and which are incorrect? 75 > 76, 48 < 42, 34 = 33)
- Identify one more than, one less than, 10 more than and 10 less than a given number
- Know the addition and subtraction facts to 20 and commit them to memory
- Show the meaning of addition (putting together, increasing)and subtraction (taking away, comparing, finding the difference)
- Use these operations to solve story problems Example: If I have 10 cupcakes, but I ate 3 of them, how many cupcakes do I have left?
- Use the inverse relationship between addition and subtraction to solve problems
- Represent equivalent forms of the same number through the use of physical models, diagrams, and number expressions to 20 (e.g. 8 may be represented as 4 + 4, 5 + 3, 10 - 2)
- Use the knowledge of place value (tens and ones) to find answers to 2 digit addition and subtraction problems (example: 17 + 2, 15 - 5)
- Find the sum of three one-digit numbers
- Count and group objects in ones and tens (example: three groups of 10 and 4 equals 34, or 30 + 4)
- Make reasonable estimates when comparing larger or smaller number
- Algebra and Functions
- Write and solve number sentences from problem situations using addition and subtraction (Examples: 1) Nina had 14 shells. That was 5 more than Eddie had. How many shells did Eddie have? 2) 5 + ___ = 6 ___ + 12 = 14
- Understand the meaning of the symbols +, -, =
- Create problem situations that might lead to given number sentences involving addition and subtraction
- Data Analysis and Mathematical Reasoning
- Describe, extend and create patterns
- Use manipulatives and/or drawings to solve problems
- Make decisions about how to set up a problem
- Begin to explain thinking or reasoning used to solve problems
- Self-check work
- Note connections between one problem and another
- Make and interpret simple graphs
- Sort data by common attributes
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Measurement and Geometry
- Use non-standard units to measure and compare lengths, weight and volume
- Use traditional clocks to tell time to the hour and half hour and compare time related events (e.g. before, after)
- Identify and understand the value of pennies, nickels, dimes, and quarters and show different combinations of coins that equal the same value
- Sort and classify two and three-dimensional shapes
- Identify and describe attributes of two and three-dimensional shapes including the faces of three-dimensional objects ( triangles, rectangles, squares and circles)
- Describe and arrange objects in space (e.g. near, far, below)
- Classify familiar plane and solid objects by common attributes (e.g. color, shape) and explain which attributes are being used for classification
- Give and follow directions about location (e.g. above, on top of, under)