Method 1:12x23 = (10+2) x23 = 10x23+2x23 = 230+46 = 276.
Method 2:12x23 = 12x (20+3) = 12x20+12x3 = 240+36 = 276.
Method 3:12 x 23 = (10+2) x (20+3) = 276.
23 times 12, the calculation can be thought of this way: Divide 23 into (20) and (3) 23 x 12 = (20 3) x 12 =20 x 12 3 x 12 =240 36 =276