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Q: How do you use compatible numbers and multiples of 10 to estimate 34600 divided by 70?

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The best way to estimate a quotient using compatible numbers is to first understand how compatible numbers work. They are numbers that are close in value to the actual numbers and are easily added, subtracted or divided.

31.8966

23.3043

70.013

119.3333

76.8298

8.6932

It is most useful for finding quotients because it works with multiples.

2.6952

6.9877

Numbers can't be divided by multiples. They get divided by factors. Factors go into numbers, numbers go into multiples.

535.6 divided by 35 using compatible numbers = 15.302857142857144

0.0563

4.9048

11

Estimate 43/81 by using compatible numbers

6.9877

0.1511

5.6261

"Quotient" implies that there is some sort of division going on. I don't see any evidence of that.

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Compatible Numbers numbers that are easy to compute mentally are called

Multiples are the numbers that can be divided by their factors. Like multiples of 2 are 2,4,6,8,10 and so on .The numbers obtained from the multiplication of 2 with all the natural numbers are the multiples of 2.

All numbers that leave a remainder when divided by 35.

420