Subtraction All Facts 1 Flashcards by Michael Norris | Brainscape

Q

1

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A

1

- 0

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1

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

1

- 1

__

A

1

- 1

__

0

How well did you know this?

1

Not at all

2

3

4

5

Perfectly