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Add. 58+28 Item 19 Which number is prime? 4 9 21 23 1016 78 716 18
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Aug 12, 2022
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Add.
58+28
Item 19
Which number is prime?
4
9
21
23
1016
78
716
18
Mathematics
high-school
Esdes
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58+28=86.
8+8=16
5+2=7
take the 1 from 16 and add it onto the 7
1+7=8: thats the tens place.
Now we only have 6. So thats the ones place. Combine the two numbers and you get 86.
Matthew Hannigan
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Aug 16, 2022
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