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Write the exponent 3^5 in expanded form.
3 x 3 x 3 x 3 x 3
Solve the exponent 4^4
256
Jane needs to pay her parents $300. She already has $125 and earns $15 a week. Write an expression to show how many weeks it will take her to save up all of the money.
125 + 15x
Everytime Kyle and Leah play basketball, Kyle makes 1/3 as many shots as Leah does. Write an expression to show how many shots Kyle makes.
x/3
Solve the expression: 3(4+7) - 2(3-1)
29
Solve the expression: (4 x 7)^2 + 3(7-5)
778
Simplify the Expression: 3x(x + 3y)
3x^2 +9xy
Are these expressions equivalent? 3n - n = n - 3n
No. If you make n=1 the left side would be 3-1 and the right side would be 1-3. Therefore these are not equivalent.
Are these expressions equivalent? 5ab + 7b + 3a - 5ab = 10ab
No. You can only add coefficients of variables that are the same. I cannot add 7a and 3b but I can subtract 5ab from 5ab.
Are these expression equivalent? 7a x 3b = 21ab
Yes. I can multiply coefficients of any variables so I can multiply 7a and 3b together to get 21ab.
What is a variable? Give an example
A variable is a letter that represents any given number (This is something we do not know in a problem.) Example: 3x + 5 with the x being the variable.
What is an operation? Give an example.
An operation is a symbol (+,-,x,/) that tells us what to do in a math problem. An example would be addition.
