tEACH Special Education Resources
743 Followers
Grade Levels
K - 2nd
Subjects
Resource Type
Standards
CCSS1.OA.C.6
CCSS2.OA.B.2
Formats Included
- PDF
Pages
1 page
tEACH Special Education Resources
743 Followers
Description
Help your students develop conceptual understanding and fluency for subtraction within 20.
This cheat sheet contains six teacher scripts for teaching six different subtraction strategies, organized from concrete to abstract. Strategies include:
-Take away (manipulatives)
-Take away (drawings)
-Hop back (number line, hundred chart)
-Count back (fingers)
-Count up from smaller number
-Get to ten
Recommended for use with the accompanying student materials. Five days of practice with subtraction to 20!
Total Pages
1 page
Answer Key
N/A
Teaching Duration
N/A
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Standards
to see state-specific standards (only available in the US).
CCSS1.OA.C.6
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
CCSS2.OA.B.2
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
Reviews
Questions & Answers
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