It is 2000 to the nearest thousand
Oh, dude, rounding to the nearest tenth means we're looking at the first decimal place. So, 645.059 rounded to the nearest tenth is 645.1. Like, we just look at the number right after the tenths place, and if it's 5 or more, we round up. Easy peasy, right?
12346-987654 = -975308
987654
736 to the nearest 1000, is 1000.
1000
1000
1000
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1000