Posted by **marko ** on Tuesday, January 10, 2012 at 8:09pm.

Could you please check ifI have these right?

i need to estimate using benchmarks

(show work)

1/8 + 3/5

i got:

0 + 1/2 = 1/2

_________________

4 3/4 - 1 2/3

i got:

4 +1 = 5 - 1 +1 = 2

so 5 - 2 = 3

_____________________

43 7/8 divide 10 1/3

43 + 1 = 44 10 +0 = 10

so 44 divide by 10 = 4.4

________________________

2 5/6 * 6 1/0

i got:

3 * 6 = 18

______________________

4/4 + 1/2

igot: 1 + 1/2 = 1 1/2

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