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collegebound88

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Sep 25, 2005
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3 7/8 plus 1 3/4=10 4/8 is this correct?
 

tkhunny

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collegebound88 said:
3 7/8 plus 1 3/4=10 4/8 is this correct?
I think not. 7/8 < 1 and 3/4 < 1 and 3+1+1+1 = 6. Your answer must be less than that.

Estimate first. You simply cannot make errors like that with a good estimate.

3 7/8 = (24+7)/8 = 31/8
1 3/4 = (4+3)/4 = 7/4 = 14/8

31/8 + 14/8 = 45/8 = (40+5)/8 = 5 5/8 < 6
 
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