abacus
arithmetic
background
boy
brain
child
childhood
clever
count
development
education
elementary
genius
goal
happy
intellect
iq
kid
knowledge
learning
mathematics
maths
mental
mental arithmetic
mentality
mind
numbers
quick count
result
school
skill
smart
smile
solving
soroban
student
study
studying
success
think
time
tool
yellow background
young
定額
Schoolboy with abacus over yellow background. Kid study at mental arithmetic school. Education and development concept. Mental arithmetic lessons. Back to school. Smart kid, iq.の素材 [FY310145439468]
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