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Elementary Mathematics

Lesson 21

Taking Away One

Taking away one

Taking away one

6 counters; 1 slide away one at a time and 5 remain.

Taking away one

TrayTaken away56 − 1 = 5Count what is left: 5.
Taking away one.
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Conceptual model: a simplified teaching picture.

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Six dates are on a plate. Fatima eats one.

How many dates are left on the plate?

How many dates are left on the plate?

Taking away one leaves one less: 6 − 1 = 5.