Sam has 3 wooden steps each of 4 cm, 2 steps each of 6 cm, and 1 step of 8 cm. What is the average length of all the steps?

easy 2 marks Class 2 · Mathematics · The Longest Step

Answer

5.33 cm

The correct answer is 5.33 cm — Divide total length by number of steps: $\frac{32}{6} = 5.33 cm$ (rounded to two decimal places).

Step-by-step solution

Count the total number of steps: $3 + 2 + 1 = 6$ steps.
Calculate the total length: $3 \times 4 + 2 \times 6 + 1 \times 8 = 12 + 12 + 8 = 32 cm$ .
Divide total length by number of steps: $\frac{32}{6} = 5.33 cm$ (rounded to two decimal places).

Common mistake: Forgetting to divide by the total number of steps

Concept tested: Average length of steps