Create better lessons quicker
0 + ? = 20 - 20, 10 + ? = 20 - 10, 2 + ? = 20 - 18, ? + 5 = 20 - 15, 6 + ? = 20 - 14, 4 + ? = 20 - 16, ? + 7 = 20 - 13, ? + 1 = 20 - 19, 8 + ? = 20 - 12, ? + 3 = 20 - 17, ? + 11 = 20 - 9, ? + 9 = 20 - 11, 14 + ? = 20 - 6, ? + 19 = 20 - 1, 12 + ? = 20 - 8, ? + 15 = 20 - 5, ? + 13 = 20 - 7, ? + 17 = 20 - 3, 16 + ? = 20 - 4, 20 + ? = 20 - 0, 18 + ? = 20 - 2,

Number bonds to 20

by Sefmoo

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