Math Monkey

The Math Monkey when unupgraded is simply a Dart Monkey with longer range, which throws pencils that pop one layer from one Bloon, but it has many mathematical upgrades.

Pencil Sharpener
Pencils now pop three Bloons each.

Price: $300 on Medium.

Layer Multiplication
Pencils pop more layers depending on how many Bloons are in range (max 20 layers).

Price: $750 on Medium.

Details: Basically, the amount of layers popped is multiplied by the amount of Bloons in its attack range.

Prime Popping
Each pencil's popping power is a prime number!

Price: $1,000 on Medium.

Details: The pencil's popping power goes from 3, to 5, then 7, then 11, and then back to 3.

Pi
Attack speed and range is multiplied by Pi!

Price: $5,000 on Medium.

Percentage Power
Tier 5 Upgrade: The amount of layers popped/damage dealt per shot is increased to 1% of the Bloon's RBE if its damage would be less than 1% of the Bloon's RBE, useful for MOAB-class Bloons.

Price: $20,000 on Medium.

Better Glasses
The glasses it wears become better, allowing the Monkey to detect and attack Camo Bloons.

Price: $400 on Medium.

Subtraction Shield
When damaged, it adds 1 AD (Absolute Defense) for each unit of HP lost.

Price: $600 on Medium.

Monkey Scientist
Every second shot it will throw a red, blue or purple vial with its usual pencil.

Price: $1,500 on Medium.

Details: Red vial creates a 0-0 Bomb Tower's explosion, but it pops two layers. Blue vial Snap-freezes all Bloons hit by the explosion. Purple vial pops Bloons and removes Camo, Regen and other properties from them. They each have an equal chance of appearing.

Addition Ability
Addition Ability: Pops one layer from every Bloon onscreen, but it pops an extra layer for each other tower (including things like Sentries) that's onscreen. MOAB-class Bloons can be heavily damage by this when many towers are around. Max damage: 100.

Price: $3,000 on Medium.