# 1st Grade Common Core: 1.OA.4

Common Core Identifier: 1.OA.4 / Grade: 1
Curriculum: Operations And Algebraic Thinking: Understand And Apply Properties Of Operations And The Relationship Between Addition And Subtraction.
Detail: Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.
30 Common Core State Standards (CCSS) aligned worksheets found:
Another set of add-subtract number bonds.
Your students will review place value, identify the number of tens and ones in a 2-digit number. Add zero to single-digit numbers. Identify a polygons, including hexagons. Count up from 2-digit numbers.
On these worksheets, students will count by tens starting with (8, 18, 28, 38...), complete a part-part-whole diagram, complete a fact family, and use place value blocks to find a number.
How many more counters are needed to make 20 in each group?
Write the correct addition/subtraction fact family for each set of numbers.
Draw a model to solve an addition problem. Answer a question with tally marks. Show "one less" than the given numbers. Solve basic subtraction problems.
Identify solid shapes (spheres, cubes, rectangular prisms). Answer questions from a pictograph. Complete a bar model. Fill in the missing parts on a tally chart.
Count by twos starting with 2 (2, 12, 22, 32, 42...), practice repeated addition, as well as basic addition and subtraction.
Use the number lines to determine the missing quantity in each subtraction fact.  Use the "count back" technique.
Write the correct numbers in each addition/subtraction fact family triangle.
In this set, pupils will identify cubes, spheres, and cylinders. They will also complete an addition bar model, use non-standard units to measure a lizard, and compare two digit numbers (using <, >, and =).
Use addition or subtraction to determine the missing number in each part-part-whole box.
For the tenth week of M.B., students will order objects by length (shortest to longest), identify solid shapes (cubes, cones, spheres), complete a pictograph, and answer place value questions.
Use the number line to determine the missing number in each subtraction fact.
Find the missing numbers. Geometry and time challenges.
On these Math Buzz worksheets, your first graders will measure a whale using non-standard units, identify solids (cones, cylinders, cubes), subtract, and identify shapes that have equal parts.
In this week's worksheet set, students will practice counting by 10s (6, 16, 26, 36...), find "one more" and "one less" than a given number, write the times shown on the analog clocks (11:00 and 1:00), and illustrate a math fact family.
More fact family subtraction-addition fact family triangles to solve.
This week you students will decompose 2-digit numbers into 1s and 10s, draw a model to solve an addition problem, determine the number of straight sides on polygons, and continue shapes in a pattern.
Add or subtract to find the missing part of each number bond.
Even more difficult addition square puzzles
More difficult addition squares.  Solve by placing numbers in boxes to find the given sums.  2x2 grid.
Most difficult math addition squares on a 3x3 grid.  Challenging level.
Even more level level 1 addition puzzles to build students' logic skills.
Even more addition square logic puzzles
More level 1 addition squares; Includes 3 puzzles for students to solve; Sums up to 18
Yet another set of addition puzzles on a 3 by 3 grid for students to solve.
More addition square brain teasers for students to solve; Sums up to 30;  Medium level.
Students complete the addition squares by putting numbers in boxes to make the given sums.  Easiest level.  2x2 grid.
Not a member yet? Join Today!
My Account
Site Information