NeydelinG577128 NeydelinG577128

25-10-2022
Mathematics

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what fact is missing from this fact family 20-1=191+19=2020-19=1

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GwennE287720 GwennE287720

25-10-2022

A fact family is two addition sentences and two substraction sentences that all use the same numbers, so in this case, we need another addition

[tex]19\text{ + 1 = 20}[/tex]

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