Please animate to include a next button to make lines appear one at a time ok

Think of a number: *
add 3: * + 3
double: * + * +6
add 4: * + * +10
halve: * +5
take away the number you started with: ?

What did you end up with?

Now try again starting with a different number.

Try again?

Try starting with a fraction or decimal.

Why is the answer ALWAYS the same?

Please animate to include a next button to make lines appear one at a time

Think of a number: Y
add 4: Y+4
double: 2Y+8
subtract 7: 2Y+1
NOW
Type in the number you finished with.