Question

The tape diagram represents an equation.
2 tape diagrams that represent the same length. The top tape diagram has 1 part, which is 25 units. The bottom tape diagram has 2 unequal parts. The first part is x units and the second part is 13 units.
\[25\]
\[x\]
\[13\]
Find the value of
\[x\] that makes the equation true.
\[x=\]

Answer 1

The two tapes represent the same total length, so
x + 13 = 25.
Solving, x = 25 − 13 = 12.

Answer: x = 12.