Click on the link below and play the Pac-Man style game. you need to set your timer and play for 10 minutes.
http://www.sheppardsoftware.com/mathgames/round/mathman_round_multiplication.htm
When you are finished, number from 1-5 on a piece of paper and copy down all of the following problems and solve them. Estimate the following products:
1. 23 x 430 x 67
2. 253 x 100 x 4
3. 60 x 78
4. 603 x 489
5. 932 x 432
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