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Q: What is 212 plus 347 using compatible numbers to estimate equals?

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Estimate 43/81 by using compatible numbers

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.

23.3043

70.013

119.3333

i think it is 28x26

94

300 + 60

568-342 using compatible numbers = 226

77

280 + 500 = 780

2.6952

6.9877

4.9048

535.6 divided by 35 using compatible numbers = 15.302857142857144

0.0563

Not in this case.

100+500=600

If you know the number is 7128 I do not understand why on earth anyone would want to estimate it!

Compatible numbers would be easier. Rounding gives you 14 x 47. Compatible numbers could be 13 x 50 which would be closer to the actual product.

1800

70.013

231/34

84.9523

6.9877