Answer all the questions below and press submit to see how many you got right.
Squared : $x$ squared refers to the number $x^2=x\cdot x.$ For example 3 squared equals 9.
What is ${0}^2$?
Addition : Addition is the mathematical operation that describes increasing a number by an amount equal to a second number. The mathematical symbol for addition is the plus sign $+.$ The term addition is also used for a generalization of this basic operation on numbers to functions, vectors and matrices.
Multiple : A multiple of a number $x$ is any of the numbers $1x,2x,3x,4x,\ldots.$ For example the multiples of 7 include 7, 14, 21 and 70.
What is 2×2?
What is ${7}^2$?