Solution:

The three errors are as follows:
a) fynd is spelled wrong. The correct spelling is 'find'.
b) that is not appropriate to use here. It should be 'this'.
c) There are only two errors in the question and that is the third error because the questions asks us to find three.

Solution:

The attached picture shows you how you can do it. If you were able to deduce any other way, feel free to comment.

Solution:

Since the door is not visible in this picture, the bus is moving in the left direction.

Solution:

Hockey Stick $49.50 & ball $0.50

Solution:

Draw a tilted line on 1st plus (+) operator, + will become 4 :-)
The equation then becomes true: 545+5=550.

Solution:

888+88+8+8+8=1000

Solution:

A and W.

The letters are the first letters of the words in the question. Thus, the next two letters are A and W.

Solution:

SIX - 9 (IX) = S
9 (IX) - 10 (X) = I
40 (XL) - 50 (L) = X

=> SIX

Solution:

10

38 Sheeps = 30 ate sheeps (30 ate sounds like 38)
There's 40 Lions in a field, 30 ate Sheeps

So if you do simple maths 40 - 30 = 10
the answer is 10

Solution:

"Six" (6)

When you remove the first letter "S" from the word "Six," you are left with the letters "Ix."

"Ix" is the Roman numeral representation of the number 9.

Thus, the wordplay involves the transformation of "Six" (6) into "Ix," representing the number 9, which is an odd number in Roman numerals.