Differentiate with these 231 Subtraction Facts to 20
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Common Core: Add and Subtract within 20
• CCSS.Math.Content.1.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).
• CCSS.Math.Content.2.OA.B.2 Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers.
Use as simple subtraction flashcards OR for the subtraction activities below:
Select 10 pairs of subtraction facts with the same answer (20 cards). Students play Memory or Concentration, turning over 2 cards at a time and keeping them if they have the same answer. The game is over when all cards are gone. The winner is the student with the most cards. Keep cards that belong together in individual baggies.
Select the subtraction cards that are appropriate for your students. Place cards face down in a pile. Students roll a die to see how many cards they can pick. Students keep each card that they correctly solve. The game is over when all cards have been drawn. The winner is the student with the most cards.
Select the subtraction facts that a group of students needs to practice. Students line up the cards as though they are on a path. This creates a “follow the path” type game. Each student has a game token. Students take turns rolling a number die, moving that number of spaces and solving the fact that is on the space where the student lands.
Designed to be printed out back to back with sets of 20
different Back to School clipart pictures printing on the reverse side.
You can choose not to use the backings, and just print out
the subtraction facts, optional recording sheets, and awards,
or you can simply print as is and glue the backings on
OR PRINT BACK TO BACK AS FOLLOWS:
First, run pages 1-22 – These directions, Seller Info & 20 pages of subtraction facts.
Then, place the fact sheets face up AND facing you into the printer paper tray.
Now, print out pages 23-42 which contain 20 different types of backings (Back to School) that will be printed on the reverse side of each sheet.
Finally, just cut each sheet on the paper cutter into 12 square cards.
Pages 43-50 contain 8 optional recording sheets on which students can write the subtraction facts they solve. 4 are in color, and 4 are in black and white. You can laminate the colored versions, and ask students to use erasable markers, OR you can print out the black and white versions for students to record in pencil.
Pages 51 and 52 are 4 optional Subtraction Champion Awards, 2 color, 2 BW.