Betsy found 518 - 49 = 469. She was not sure she was correct so she tried to check her answer by adding 518 + 49. How could you help her? ..... Choose the correct answer below. O A. Betsy is checking her subtraction the correct way. O B. Betsy should add 518 +469 to check her subtraction. O C. Betsy should add 469 + 49 to check her subtraction. O D. The only way to check subtraction is to do the original problem again.
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
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