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192

Copyright © 3P Learning – These resources have been created in partnership with Dr. Marian Small.

For more information visit

www.mathletics.com

Rubric

Level 1

Level 2

Level 3

Level 4

The student is unable

to determine even one

pair of numbers that

work.

The student does not

realise, in advance, that

B must be less than A.

The student does not

know how to use one

solution to easily get

another.

The student determines

at least one or two pairs

of numbers that work.

He or she can show

that the calculations

are correct.

The student predicts

that B must be less

than A without giving

clear reasons.

The student does not

know how to use one

solution to easily get

another.

The student determines

at least three or four

pairs of numbers

that work. He or she

can show that the

calculations are correct.

The student predicts

that B must be less

than A and gives

some reasons.

The student does not

know how to use one

solution to easily get

another.

The student determines

that, in general, B is

75% of A and clearly

explains why.

The student easily

predicts and explains

why B must be less

than A without actually

performing any

calculations.

The student shows an

understanding that

once A and B work, so

does any pair created

by multiplying A and B

by the same amount.

Original Prices

Number