Fact family:
2 + 9 = 11
9 + 2 = 11
11 - 2 = 9
11 - 9 = 2
http://www.bellaonline.com/articles/art57615.asp
write the fact family for 2,11,and 9
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I don,t understand of rule -.25
in $1.25 out $1.oo
in $0.30 out $0.05
in $___ ? out $0.75
in 2.40 out _____? please help me!!
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