機器
10
abacus
abaki
adding
addition
aid
arithmetic
ball
basic
blue
board
business
calculate
calculation
calculator
color
computing
count
counting
decimals
detail
division
education
frame
game
gameware
green
math
mathematical
mathematics
multiplication
number
object
office
pearl
play
red
result
school
science
solution
subtraction
sum
system
tool
toy
white
wood
yellow