Use mental math to decide which equations are true. Drag the true equations into the box. 1 . 23 ÷ 10 1 = 0 . 123 123 ÷ 100 = 1 . 23 12 . 3 ÷ 10 0 = 1 . 23 0 . 123 ÷ 10 = 1 . 23 1 , 230 ÷ 10 3 = 1 . 23