Correct: 6+7=13, 6+8=14, 6+9=15, 6+5=11, 6+2=8, 6+3=9, 6+4=10, 6+11=17, 6+12=18, 8-6 = 2, 9-6=3, 10-6=4, Incorrect: 6+3=12, 6+4=13, 6+5=13, 6+9=18, 6+7=12, 6+8=16,

Addition & Subtraction By 6

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