To round numbers to the correct number of significant figures, start by identifying the last significant figure you want to keep. Then, look at the next digit - if it is 5 or greater, round up; if it is less than 5, round down. Finally, adjust the rest of the digits to the right of the last significant figure to zeros.
When multiplying numbers with significant figures, count the total number of significant figures in each number being multiplied. The result should have the same number of significant figures as the number with the fewest significant figures. Round the final answer to that number of significant figures.
When dividing numbers, the result should have the same number of significant figures as the number with the fewest significant figures in the calculation. Round the final answer to match the least number of significant figures in the original numbers.
When multiplying numbers with significant figures, round the final answer to match the number with the least significant figures in the original numbers.
The product of 1000 and 0.00357 is 3.57. The result should have three significant figures as that is the lowest number of significant figures given in the original numbers being multiplied.
When adding or multiplying numbers with significant figures, the result should be rounded to the least number of decimal places in the original numbers. For addition, the result should have the same number of decimal places as the number with the fewest decimal places. For multiplication, the result should have the same number of significant figures as the number with the fewest significant figures.
When adding numbers, count the number of decimal places in each number. The result should have the same number of decimal places as the number with the fewest decimal places. This final number is your answer with the correct number of significant figures.
When multiplying numbers, the result should have the same number of significant figures as the number with the fewest significant figures.
When multiplying numbers with significant figures, count the total number of significant figures in each number being multiplied. The result should have the same number of significant figures as the number with the fewest significant figures. Round the final answer to that number of significant figures.
When multiplying numbers, count the number of significant figures in each number being multiplied. The result should have the same number of significant figures as the number with the fewest significant figures.
When dividing numbers, the result should have the same number of significant figures as the number with the fewest significant figures in the calculation. Round the final answer to match the least number of significant figures in the original numbers.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
32.2
When multiplying numbers with significant figures, round the final answer to match the number with the least significant figures in the original numbers.
The answer will usually depend on the number of significant figures in the numbers from which there numbers were derived.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
The correct answer depends on what is known about the number 2610. If it is known to be correct to 3 significant figures, the correct answer is 2620. If it is known to be correct to 4 significant figures, the correct answer is 2622. If all the numbers are known to be accurate to at least 2 decimal places then the correct answer is 2621.92
To determine the answer with the correct number of significant figures, first identify the significant figures in each of the numbers involved in the calculation. The final result should be reported based on the number with the least significant figures among the values used. For addition and subtraction, the answer should be reported to the least precise decimal place, while for multiplication and division, it should match the number of significant figures of the least precise number used in the calculation.