Question

5) Estimate the product. Round the first factor to the nearest
numdred the second factor to the nearest ten, and then
multiply.
1) 85 2 x 28
2) 67 x 858​

Answer 1

Answer:

To estimate the result of multiplication (product), round the numbers to some close numbers that you can easily multiply mentally. One method of estimation is to round all factors to the biggest digit (place value) they have. (This is somewhat of a crude method but serves as a starting point in learning estimation.)