Q: Why is the library not adding anymore fairy tales? A: Because it ran out of elf space.
This riddle can be solved by answering this simple math exercise.
This particular exercise tests students’ knowledge about the mathematical properties. They are formally introduced in algebra classes, but they are taught in many elementary schools.
To help you out with the problem, here's a brief description about each property:
The word "commutative" comes from "commute" or "move around", so the Commutative Property is the one that refers to moving stuff around. For addition, the rule is "a + b = b + a"; in numbers, this means 2 + 3 = 3 + 2. For multiplication, the rule is "ab = ba"; in numbers, this means 2×3 = 3×2.
Associative Property
The word "associative" comes from "associate" or "group";the Associative Property is the rule that refers to grouping. For addition, the rule is "a + (b + c) = (a + b) + c"; in numbers, this means 2 + (3 + 4) = (2 + 3) + 4. For multiplication, the rule is "a(bc) = (ab)c"; in numbers, this means 2(3×4) = (2×3)4.
Identity Property
The multiplicative identity is 1. This means that you can multiply 1 to any number... and it keeps its identity! The number stays the same.
The additive identity is 0. This means that you can add 0 to any number... and it keeps its identity! The number stays the same.
Zero Property
This math property states that any number multiplied by zero will always be equal to zero.
There are several ways to study math. Some students need to use as many practice questions as possible, while other students can benefit by listening to the math lecture over and over. Find some study tips for math at home from Thoughtco.com.