Rules for Using Significant Figures in Mathematical Operations

Add the values like normal and round to the significant decimal place. For example, 5.23 (significant to hundredths place) + 3.484 (significant to thousandths place) 8.714 ( 8.71. The answer is limited to the hundredths place because 5.23, so the answer is rounded to 8.72 (hundredths place). For example, 1050 (significant to tens place) ................
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