Question

Estimate the product by adjusting the larger factor to the compatible number 25 and then multiply. 27 x 8 = Think about counting by 25s.

Answer 1

You have the following product:

27 x 8

To estimate the product by rounding 27 to 25, you consider that 25 x 8 is the same as adding 25 eight times.

Then, you have:

25 x 8 = 25 + 25 + 25 + 25 + 25 +25 + 25 +25

25 x 8 = 50 + 50 + 50 + 50 each pair of 25's add up 50

25 x 8 = 100 + 100 each pair of 50's add up 100

25 x 8 = 200

Hence, an estimation of the given product is 200, by considering 27 rounded to 25.