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num
12
ops
06
drawn
08
a math card-game brain trainer
killer · 3-digit target · random deck
use every card · land on target
time-based 3-star scoring
nine themes · plays offline
free · android
Cardculus · paper edition
Draw.
Build.
Solve.
Pick a tier — four real difficulties.
2
Easy
+ − only · guided start
2
Medium
full ops · guided start
2
Hard
full ops · random deck
3
Killer
3-digit target · random
killer ·
3-digit target
· random deck
target
1
0
0
·100·
Five hand cards.
Every one must end up in the expression.
target
1
0
0
·100·
4
×
5
×
5
all 5 cards used
solved · 4 × 5 × 5 = 100
Δ 0.00
draw
numbers
12
left
operators
06
left
· numbers ·
4
5
5
· operators ·
×
×
hint · 01 / 01
00:42
round complete · killer
Three stars.
4 × 5 × 5 = 100 · in 42 s
time
42 s
hints
0
streak
8
stars
★★★
nine themes
Paper, dark,
and more
.
paper
cardculus
kids
midnight
dracula
monokai
crimson
mint
one dark
free · android
Train the
math part
of your brain.
Four difficulty tiers · every hand card must land on target ·
daily hints · nine themes · plays offline.
Get Cardculus →
Tap a card to begin
Solve
4 × 5 × 5 = 100
highserpent · cardculus