Posted by **pat** on Wednesday, October 27, 2010 at 8:40am.

circle the best estimate for each problem. then solve.

52.2*39.7=_____ A.2,00 B.20,000 C.200,000

Solution:_______________________.

148.3*232.51=____ A. 3,000 B.30,000 C.300,000 Solution ________________.

please! show me work too so, i can practic for this week tests thank you!!

- 5th grade math -
**Writeacher**, Wednesday, October 27, 2010 at 9:01am
#1 --

52.2 is close to 50, and 39.7 is close to 40. If you multiply 50*40, what do you get?

#2 --

148.3 is close to what? 150, right?

232.51 is close to what? 230, right? What happens when you multiply those two estimates?

Use Google to check your multiplication:

1. Go to http://www.google.com

2. Enter **50*40** and press Enter.

3. Did you get the right answer?

4. Try it again for the second problem.

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