How to subtract decimals
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ACT Math › How to subtract decimals
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1
A runner runs 10.2 miles east, then 2.3 miles west, then 1.4 miles east.
How many miles did the runner travel from where he started? (How far east did the runner go)?
9.3 miles
CORRECT
10.2 miles
6.5 miles
13.9 miles
19.3 miles
Explanation
When the runner is travelling east, it's in the positive direction. West is the negative direction. So we can compute it by doing the operation 10.2 + (–2.3) + 1.4 = 9.3
2
Subtract:
CORRECT
Explanation
Rewrite 
3
What is 
CORRECT
Explanation
