A set of matchup cards to practice subtraction within 30.
Use this resource when students are learning their subtraction facts within 30.
Print the cards on cardstock and cut them out. Store them in a resealable bag to be used over and over.
Students will match up the number sentence with the correct answer. For students needing extra support, let them use counters to determine the answer.
This resource works well when used as a math center activity.
Common Core Curriculum alignment
Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 ...
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 - ...
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
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