A book where even elementary school students who are not good at arithmetic can do two-digit multiplication by heart in 15 seconds (EIWA MOOK)

Name: A book where even elementary school students who are not good at arithmetic can do two-digit multiplication by heart in 15 seconds (EIWA MOOK)
SKU: 282a85d14cd0ab5ece9fe9938f7ce91e
Price: 4163 KRW
Availability: InStock