Question

Round to the tens place to estimate the answer.

172 x 18 =

Answer 1

3400

Explanation:

When you round to the tens place you look at the number in the ones place. If it is 4 or less then you keep the tens place the same. If it's 5 or more then you round the tens place up one. Then you make the ones digit a 0.

Since there is a 2 in the ones place in 172, you keep the tens digit the same (170).

Since there is an 8 in the ones place in 18, you round the tens digit up one (20).

Now you multiply.

170×20=3400

I hope that made sense.