3 0 - 33 ⎻ 3 =, 9 0 - 99 ⎻ 9 =, 2 0 - 28 ⎻ 8 =, 5 0 - 57 ⎻ 7 =, 1 2 - 22 ⎻ 10 =, 4 0 - 55 ⎻ 15 =, 3 4 - 44 ⎻ 10 =, 2 3 - 73 ⎻ 50 =, 6 0 - 88 ⎻ 28 =, 6 5 - 95 ⎻ 30 =, 6 7 - 87 ⎻ 20 =, 8 0 - 96 ⎻ 16 =, 4 6 - 66 ⎻ 20 =, 6 2 - 92 ⎻ 30 =, 7 0 - 91 ⎻ 21 =,

Practice 2-digit Mental Math (Subtraction)

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