Question

Use mental math to decide which equation are true drag the true equation to the box A 1.23 / 10 x 1 equals 0.1 23 B 123 / 100 = 1.23 C 12.3 / 10 x 0 equals 1.23 D 0.123 / 10 = 1.23 E 1,230 / 10 * 3 equals 1.23

Answer 1

Let's evaluate each equation using mental math.

A. \( 1.23 / 10 \times 1 = 0.123 \) (This is false because \( 1.23 / 10 = 0.123 \) not \( 0.123 \))
B. \( 123 / 100 = 1.23 \) (This is true because \( 123 / 100 = 1.23 \))
C. \( 12.3 / 10 \times 0 = 1.23 \) (This is false because anything multiplied by 0 is 0)
D. \( 0.123 / 10 = 1.23 \) (This is false because \( 0.123 / 10 = 0.0123 \))
E. \( 1,230 / 10 \times 3 = 1.23 \) (This is false because \( 1,230 / 10 = 123 \) and \( 123 \times 3 = 369 \))

The true equation is:

**B. \( 123 / 100 = 1.23 \)**

Drag this to the box.