1. Notes Over 1.4 It’s time to stop “daydreaming”
and start applying “mental math”

2. Notes Over 1.4 Not a Solution Not a Solution
Check whether the given number is a solution of the equation.
Solution of an equation - when the variable is replaced and the statement is true.
Not a Solution
Not a Solution

3. Notes Over 1.4 Not a Solution Solution
Check whether the given number is a solution of the equation.
Solution of an equation - when the variable is replaced and the statement is true.
Not a Solution
Solution

4. Notes Over 1.4 Not a Solution Solution
Check whether the given number is a solution of the equation.
Solution of an equation - when the variable is replaced and the statement is true.
Not a Solution
Solution

5. Notes Over 1.4 Not a Solution Not a Solution
Check whether the given number is a solution of the inequality.
Solution of an inequality - when the variable is replaced and the statement is true.
Not a Solution
Not a Solution

6. Notes Over 1.4
Check whether the given number is a solution of the inequality.
Solution of an inequality - when the variable is replaced and the statement is true.
Solution

7. Notes Over 1.4 What number can seven be added to to get 21?
Write an equation that could be used to solve the equation.
Then use mental math to solve the equation.
What number can seven be added to to get 21?
What number when multiplied by 3 and the result is added by 1 will get 19?

8. Notes Over 1.4 What number can be subtracted by 12 to get 10?
Write an equation that could be used to solve the equation.
Then use mental math to solve the equation.
What number can be subtracted by 12 to get 10?
What number when divided by 3 will get 11?

9. Notes Over 1.4
Write an equation that could be used to solve the equation.
Then use mental math to solve the equation.
What number when multiplied by 4 and the result subtracted by 7 will get 9?
What number when divided by 2 will get 4?

10. Notes Over 1.4