Key Idea1 of 3
Hundreds Rounding
To round to the nearest 100, look at the tens digit. 230 rounds to 200 (3 < 5). 870 rounds to 900 (7 ≥ 5). 350 rounds to 400 (5 rounds up).
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Mathematics — Rounding and Estimating
To round to the nearest 100, look at the tens digit. 230 rounds to 200 (3 < 5). 870 rounds to 900 (7 ≥ 5). 350 rounds to 400 (5 rounds up).