Puzzle 1
Can you make this equation correct by moving exactly one matchstick?

Note: this puzzle is not interactive, and the matchsticks cannot be moved. The matchstick layouts for each digit are:
Puzzle 2
Using all of the letters A to Z, each once only, complete these common words. There are currently 4 different answers, can you find them all?
--ust
-ue-n
o-o-e
--and
-a-er
id-o-
-uc-y
e-i-t
hea--
tou--
-rie-
-ry-t
h-m-n
Puzzle 3
By changing the third letter of each of the words below, can you make another valid word?
You have to change each word such that the third letters will reveal a ten-letter word when read downwards.
Therefore, what now reads 'krzsaprokg' will be a real word.
bake
cure
maze
pest
neat
rope
port
food
poke
bugs
Puzzle 4
Each of these words can be split in half, and two letters can be placed in the middle to create a new six-letter word.
The four added pairs of letters, in order, spell an 8-letter word. What is that word?
lend
liar
pale
coin
For example:
door + ct = do + ct + or = doctor
suit + nl = su + nl + it = sunlit