• Data Type: how a value is stored
• String: text data type
• Number: numeric data type

num1 <- 7
    

num1 <- 7
num2 <- 1.23
    

num1 <- 7
num2 <- 1.23
num3 <- 0.42

num1 <- 7
num2 <- 1.23
num3 <- 0.42
num4 <- -4.56

num <- NUMBER("1.23")
str <- STRING(4.56)