Doubling numbers is a powerful math skill. Doubling can help solve a multitude of problems be they addition, subtraction, multiplication, division...
I'll try doubling 13. 13, 26 (two 10s + two 3s), 52 (two 20s + two 6s...40 +12 or 40 + 10 +2), 104, 208, 416, 832, 1664, 3328 (had to think about that one for a moment!), 6656, 13,312, 26,624...
Try to think about why some numbers are easier to double than others. What strategies make the tougher ones manageable?
Try doubling 16 until you run out of MENTAL strategies....What have you got to lose?
Peace,
T-Cubed
