Question

1. write your own numerical expression that equals 20 using at least three different operations (addition, multiplication, exponents, etc.).

Explanation:

Step1: Choose operations and numbers

Let's use exponentiation (e.g., \(2^2\)), multiplication (e.g., \(3\times\)), and addition (e.g., \(+\)). We can start building the expression. Let's consider \(2^2\times3 + 8\).

Step2: Calculate each part

First, calculate the exponent: \(2^2 = 4\). Then, the multiplication: \(4\times3 = 12\). Then, the addition: \(12 + 8 = 20\). So the expression \(2^2\times3 + 8\) equals 20. (Another example: \(3^2 + 5\times2 + 1\), where \(3^2=9\), \(5\times2 = 10\), then \(9 + 10+1=20\))

Answer:

One possible numerical expression is \(2^2\times3 + 8\) (or \(3^2 + 5\times2 + 1\), etc.)