Rohan used the model below to show 1.38÷3

Question

Rohan used the model below to show 1.38÷3

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Three groups of cubes are shown with 4 groups of tens and 3 ones in each group.

Part A
Rohan made an error in his model. Explain his error. Include the correct grouping for the model.

(1 point)

Answer 1

Rohan's error is that he did not group the cubes correctly to show the division 1.38 ÷ 3. He should have divided the cubes into 3 groups with 1 group of tens and 3 ones in each group. The correct grouping for the model is 1 group of tens and 3 ones in each group, repeated 3 times.