ikennedy0129 ikennedy0129

14-02-2022
Mathematics

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16. Jeremiah found the product of 31 and 29 as 899 by finding 30' and subtracting 1. Exptate how Jeremiah
could justify this approach.

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semsee45 semsee45

14-02-2022

Answer:

31 x 29 = (30 + 1)(30 - 1) = 30² - 1

Step-by-step explanation:

We can write 31 as (30 + 1)

We can write 29 as (30 - 1)

Therefore,

31 x 29 = (30 + 1)(30 - 1) = 30² - 1

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