Are you from science high?
the answers are the cross-out technique and the other one is.. i dont know
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adding fractions is like adding a WHOLE lot of parts of numbers
a mixed number is a whole number with a fraction, ie. 2 3/4 Adding mixed numbers involves adding the whole numbers, then adding the fractions, then reducing the fraction and if it is improper, changing it to a whole number with a fraction and adding that whole number to the other whole number answer.
Decimals include a fractional part, represented by digits to the right of the decimal point, while whole numbers only have a whole part, represented by digits to the left of the decimal point. Whole numbers can be positive or negative, while decimals can also be fractions or mixed numbers. Additionally, whole numbers are used to count while decimals are used for measurement and precision.
Adding decimal same as adding whole numbers
False because whole numbers or integers can be represented by Roman numerals as for example XXXV is the equivalent of 35