subtraction/special-types
Underkategorier
subtraction/special-types/facts
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subtraction/special-types/mental-math
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subtraction/special-types/number-line
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subtraction/special-types/with-regrouping
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subtraction/special-types/without-regrouping
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Faktagrupper
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Horisontal
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Manglende Subtrahender
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Blandet
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Over nuller
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Vertikal
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