[1] Write numbers in rectangles, write operations in circles.
[2] You have to enter all the fields on the left side of the equation.
[3] The equation must be correct. The value on the left side of the equal sign must be equal to the value on the right side of the equal sign.
[4] Do not forget: multiplication and division take precedence over addition and subtraction.
[5] Computer keyboard:
[+ plus, addition] [- hyphen, subtraction]
[x letter, multiplication] [: colon, division]
[6] The meaning of colors:
8
The correct number (or operation) in the correct spot.
3
The number (or operation) is in the equation but not in this spot.
5
The number (or operation) is not in the equation.