diff --git a/4-simple-data-manipulation/1.js b/4-simple-data-manipulation/1.js
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+// Learn what each of the operators (listed below) does,
+// then write a program that sets each of two variables to a number,
+// then outputs the result of each of these operators on those numbers.
+// Make sure you can describe, in your own words, what each operator does.
+// +
+// -
+// /
+// *
+// %
+// ==
+// <, >, <=, >=
+
+var numOne = 1
+var numTwo = 2
+
+console.log(numOne + numTwo)
+
+console.log(numOne - numTwo)
+
+console.log(numOne / numTwo)
+
+console.log(numOne * numTwo)
+
+console.log(numOne % numTwo)
+
+console.log(numOne == numTwo)
+
+console.log(numOne < numTwo)
+
+console.log(numOne > numTwo)
+
+console.log(numOne <= numTwo)
+
+console.log(numOne >= numTwo)
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diff --git a/4-simple-data-manipulation/2.js b/4-simple-data-manipulation/2.js
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+// Write a program that sets each of two variables to a number, then displays the integer quotient and integer result to the screen, like so: 7 / 3 = 2 r 1. (Hint: parseInt() in JavaScript is like to_i in Ruby.)
+
+var numOne = 7
+var numTwo = 3
+
+console.log(parseInt(numOne / numTwo))
+
+console.log(numOne % numTwo)
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diff --git a/4-simple-data-manipulation/3.js b/4-simple-data-manipulation/3.js
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+// Write a program that sets a variable to a string, then return the ALLCAPS version of that string. (In Ruby, you would have used upcase.)
+
+var string = "This is a string."
+
+console.log(string.toLocaleUpperCase());
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diff --git a/4-simple-data-manipulation/4.js b/4-simple-data-manipulation/4.js
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+// Learn how to use the compound assignment operators. What do they do?
+// +=
+// -=
+// *=
+// /=
+// %=
+
+var num = 1
+
+console.log(num)
+console.log(num--)
+console.log(num++)
+console.log(num += 3)
+console.log(num *= 3)
+console.log(num /= 3)
+console.log(num %= 3)
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