When adding or subtracting numbers, the result should have no more decimal place

Question

When adding or subtracting numbers, the result should have no more decimal places than the least precise number involved. The sum of the following two numbers is: 12.5 + 6.3 = 18.8 18.80 19 When adding or subtracting numbers, the result should have no more decimal places than the least precise number involved. The sum of the following two numbers is: .0012345 + 6.100 Question 16 options: 6.1012345 6.101234 6.10123 6.1012 6.101 6.10 6.1 When adding or subtracting numbers, the result should have no more decimal places than the least precise number involved. The sum of the following two numbers is: 12.5 + 6. Question 19 options: 18.50 18.5 18. 19.

Explanation / Answer

When adding or subtracting two numbers, with a different number of decimal places, the quantity with the least number of decimal places determines the number of decimal places in the answer. For example, let's say you are adding two masses: .1 grams .11 grams .1grams + .11grams = .21 grams Because .1 only has one decimal place, the answer becomes .2 grams, and we ignore the .01 because it is lost due to a lack of precision. The process of multiplying and dividing is different, as you compare significant digits instead of decimal places instead.

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