Posted by **thomas** on Wednesday, September 29, 2010 at 4:29pm.

complete to show how you can find the sum by making a ten, hundred, or thousand.

9+5=14

9+1+ blank

10+ blank

blank

90+50=140

90+10+blank

100+blank

blank

900+500=1400

900+100+blank

1000+blank

blank

- 3rd grade -
**bobpursley**, Wednesday, September 29, 2010 at 5:10pm
9+5=14

9+1+4

10+4

14

same thing on the others, just add zeros

- 3rd grade -
**shivanie**, Monday, September 10, 2012 at 6:47pm
how do u do it

- 3rd grade -
**Anonymous**, Sunday, September 16, 2012 at 8:11pm
800+500=

- 3rd grade -
**Tare**, Tuesday, September 10, 2013 at 8:34pm
800+500= 1,300

800+200+300

1000+300

1,300

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