Java Games: Flashcards, matching, concentration, and word search.

Estimation: "That's About Right!"

This is a fun way to estimate the sums and difference of large numbers, to the nearest hundreds place.
AB
1257 + 3681200 + 400
908 + 276900 + 300
543 + 79500 + 100
29 + 14320 + 1400
820 + 349800 + 300
662 + 626700 + 600
626 + 662600 + 700
777 + 394800 + 400
200 + 293200 + 300
135 + 177100 + 200
6566 + 30776600 + 3100
3522 + 88883500 + 9000
4444 + 24294400 + 2400
90 + 110100 + 100
919 + 191900 + 200
9 + 150 + 0
56 + 23100 + 0
49 + 490 + 0
2222 + 10202000 + 1000
5222 + 20105000 + 2000

This activity was created by a Quia Web subscriber.
Learn more about Quia 		Create your own activities