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They should progress to instantly recalling the subtraction facts. Variation: Your child can make two piles of cards of ones they know and ones they are still learning. The cards could be stored in two separate containers. Ask your child the questions orally. Subtraction facts to 20 Test Yourself 11 2 =  9 14 5  =  9 11 3 =  8 11 6 =  5 12 3 =  9 12 6 =  6 11 4 =  7 13 6 =  7 12 4 =  8 14 6 =  8 13 4  =  9 15 6  =  9 11 5  =  6 11 7 =  4 12 5  =  7 12 7  =  5 13 5  =  8 13 7 =  6 Subtraction facts to 20 Test Yourself 14 7 =  7 17 8  =  9 15 7 =  8 11 9 =  2 16 7 =  9 12 9 =  3 11 8 =  3 13 9 =  4 12 8 =  4 14 9 =  5 13 8  =  5 15 9  =  6 14 8  =  6 16 9 =  7 15 8  =  7 17 9  =  8 16 8  =  8 18 9 =  9     '()012    ( ) * K ̺{{{{{lZ#hcL^h*5CJOJQJ^JaJh*5CJOJQJ^JaJ hcL^hKCJOJQJ^JaJhcL^CJOJQJ^JaJ hcL^hcL^CJOJQJ^JaJhK5CJOJQJ^JaJ#hcL^hcL^5CJOJQJ^JaJ#hcL^hK5CJOJQJ^JaJhcL^5CJOJQJ^JaJ#hcL^hcL^5CJOJQJ^JaJ#()2   ) * K gd*gdK $a$gdK                  ! 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