3-30 Using Friendly Numbers to Subtract

Last updated over 3 years ago
3 questions
3

Subtract 1 from 21 to make a friendly number. https://talkandcomment.com/p/cfd779885ec4e12fda42ea50 (voice note)

3

Since you took 1 away from 21, we need to take 1 away from 574. What is 574 - 1 = ?https://talkandcomment.com/p/3700766119a390b26a0e47fd (voice note)


4