Is this a doubles fact? Which equation matches?, 4+5=9, 4+3=7, 4+4=8, Is this a doubles fact? Which equation matches?, 6+6= 12, 6+5= 11, 6+4=10, Is this a doubles fact? Which equation matches?, 8+8=16, 8+7= 15, 8+9= 17, Is this a doubles fact? Which equation matches?, 7+5=12, 7+7=14, 7+6=13, Is this a doubles fact? Which equation matches?, 10+9= 19, 10+8= 18, 10+10= 20.

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