CCSS.Math.Content.K.OA.A.4
The standard
For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.
Common Core State Standards for Mathematics · Operations and Algebraic Thinking
What this standard means
Students need to know the partners that make 10. If they see 6, they should figure out that 4 more makes 10. They can use counters, fingers, ten-frames, drawings, or equations to show the missing part.
Mastery looks like quick, accurate answers with a clear model, such as filling empty spaces on a ten-frame and writing 7 + 3 = 10. Students often get stuck counting the starting number again, mixing up the missing part with the total, or not connecting the objects to the equation.
Ways to teach it
- Give each child a ten-frame and counters, call out 1 to 9, and have them fill the empty spaces to make 10.
- Ask, “If I have 8 apples, how many more do I need to have 10?” and have students draw and explain their answer.
- Show a ten-frame with 5 to 9 dots, ask students to write the missing number that makes 10 on a sticky note.
- Use an egg carton cut to 10 cups and pretend eggs to show how many more eggs are needed to fill the carton.
Plan a lesson for CCSS.Math.Content.K.OA.A.4
Generate a complete lesson plan aligned to this standard, with objectives, activities, and materials. Free, no account needed.
Related standards
- CCSS.Math.Content.K.NBT.A.1
Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decompositio...
- CCSS.Math.Content.1.NBT.C.5
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
- CCSS.Math.Content.K.OA.A.2
Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.
- CCSS.Math.Content.K.OA.A.3
Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or eq...