40 + x
99
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Age may be a number, but it is also a state of mind. Ask a senior citizen if they think forty is old and watch their expression. Viper1
Three is a number, three hundred is a number, three hundred forty is a number, three hundred forty-two is a number, forty is a number, forty-two is a number, forty-two hundred is a number, two is a number, and two hundred is a number, but three hundred forty-two hundred is not a number.
5 times 5 plus 5 times 5 minus 5 divided by 5
This is a variable number, depending on what edition of the book you are reading.
Sample Response: Replace keywords with variables, numbers, and operations. Less than is subtraction, and the quotient is division. Order matters with subtraction and division. The expression is 40 n -13. To evaluate is the expression, substitute 2 in for the variable, and then use order of operations to simplify. The value when n = 2 is 7.
45 + 150% = 112.5
43 never changes ... it's always 43 ... so 43 is a constant. 'x' is the variable.
forty
two actos and forty four percent of 30 actos
Forty is a number. Four times ten.