Answer:
2(5)+5(0)=10
Step-by-step explanation:
There are several ways for this equation to work but a very simple way is shown below.
2*510+5*0=10
10+0=10
10=10
Oh. It's rounding. So, for example, depending what you were told to round to, the second problem would be 760-330=430
Yes they can just think of numbers with opposite signs
I-5I=I+5I the absoulte value is 5
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