abacus
arithmetic
background
bead
boy
brain
business
calculate
calculation
calculations
calculator
childhood
children
class
color
colorful
concept
count
education
elementary
examples
fast
finance
financial
intellect
isolated
learn
math
mathematics
maths
mental
mentality
mind
number
object
pencil
school
smart
soroban
soroban rule bills and hand gestures
space
student
studies
subtraction
symbol
table
tool
traditional
white
wooden