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Timed Test For
Find the mistake in one-step equations
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Sample Problem
Katy tried to solve an equation step by step. $\qquad\begin{align} r-3&=14.3\\\\ \\ r-3+3&=14.3-3&\green{\text{Step } 1}\\\\ \\ r&=11.3&\blue{\text{Step } 2}\\\\ \end{align}$ **Find Katy's mistake.** [[☃ radio 1]]
Katy tried to solve an equation step by step.
r
−
3
=
14.3
r
−
3
+
3
=
14.3
−
3
Step
1
r
=
11.3
Step
2
\qquad\begin{aligned} r-3&=14.3\\\\ \\ r-3+3&=14.3-3&\green{\text{Step } 1}\\\\ \\ r&=11.3&\blue{\text{Step } 2}\\\\ \end{aligned}
r
−
3
r
−
3
+
3
r
=
1
4
.
3
=
1
4
.
3
−
3
=
1
1
.
3
Step
1
Step
2
Find Katy's mistake.
Choose 1 answer:
Choose 1 answer:
A
Step
1
\green{\text{Step }1}
Step
1
B
Step
2
\blue{\text{Step }2}
Step
2
C
Katy did not make a mistake.
What's your name?
Duration
30 seconds
60 seconds (1 minute)
120 seconds (2 minutes)
180 seconds (3 minutes)
300 seconds (5 minutes)
