3 years ago

Hey please help where it has the < thing it says “ones” “tens” “nines”

Mathematics

1 answer:

Keith_Richards [23]3 years ago

5 0

Answer:

$9 \times 9 = 10nines - 1nine \\ 9 \times 9 = 90 - 9 \\ 9 \times 9 = 81 \\ thank \: you$

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