Random Puzzles 

Workings

Hint
Think literally.

Answer
Because there is 1 more coin!

2,024 = 2,023 + 1.

Workings

Hint
Look at the gaps in the alphabetic position.

Answer
V.

Skip three and two letters alternately.

Workings

Hint
helium = h-- + l--

Answers
helium = hum + lie latest = let + sat almond = man + old eldest = led + set placed = cap + led radium = air + mud desert = red + set wealth = law + the tricky = cry + kit funnel = elf + nun
Alternative Answers
The following answers use less common words.

helium = him + leu
helium = hue + mil
helium = hum + lei

latest = els + tat

almond = don + lam
almond = lam + nod

eldest = eld + set
eldest = els + ted

placed = pec + lad

radium = mud + ria
radium = amu + rid
radium = aid + rum

wealth = awl + the
wealth = haw + let

There are more answers with even rarer words, but I've chosen not to include those.

Workings

Hint
The missing word is in these locations: lo---e, ---ch, s---he, ---er, va---e.

Answer
Cat.
loe  = locate ch   = catch she  = scathe er   = cater vae  = vacate