chemistry
posted by aira .
45.3 m + 12.344 m + 1000m  1.34 m = ________________________
is 1 056.304 m the answer?

chemistry 
DrBob222
I don't think so. If the 1000 has no period after it it has only 1 s.f. and the answer 1E3. If it has a period, the answer is 1056.
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