create own client side arithmetic functions

client/src/arithmetic.js

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+import utils from './utils.js';
+
+export default {
+    methods: {
+        // Generate a addition problem
+        addition(mult = 1) {
+            let a = utils.methods.getRandomInt(5 * mult, 100 * mult);
+            let b = utils.methods.getRandomInt(5 * mult, 100 * mult);
+            return {
+                text: `${a} + ${b}`,
+                answer: a + b
+            }
+        },
+        subtraction(mult = 1) {
+            let a = utils.methods.getRandomInt(5 * mult, 100 * mult);
+            let b = utils.methods.getRandomInt(5 * mult, 100 * mult);
+            if (Math.random() > 0.5) {
+                return {
+                    text: `${a} - ${b}`,
+                    answer: a - b,
+                }
+            }
+            else {
+                return {
+                    text: `-${a} + ${b}`,
+                    answer: -a + b
+                }
+            }
+        },
+        multiplication(mult = 1) {
+            let a = utils.methods.getRandomInt(3 * mult, 30 * mult);
+            let b = utils.methods.getRandomInt(3 * mult, 15 * mult);
+            return {
+                text: `${a} \\times ${b}`,
+                answer: a * b
+            }
+        },
+        square_root(mult = 1) {
+            let a = utils.methods.getRandomInt(2 * mult, 20 * mult);
+            return {
+                text: `\\sqrt{${a * a}}`,
+                answer: a
+            }
+        },
+        getProblem: function () {
+            let possible = [this.multiplication, this.square_root];
+            let index = utils.methods.getRandomInt(0, possible.length);
+            return possible[index]();
+        }
+    }
+}

client/src/utils.js

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+export default {
+    methods: {
+        getRandomInt(min, max) {
+            min = Math.ceil(min);
+            max = Math.floor(max);
+            return Math.floor(Math.random() * (max - min) + min); //The maximum is exclusive and the minimum is inclusive
+        }
+    }
+}