Primary School Students Mental Arithmetic Practice Book Grade 4 (Second Semester) (Grade 4 (Second Semester))

Author: Zhang Hui
Publisher:
Publish Date: 2000-06-01
Features: This book is a quick calculation exercise book suitable for primary school students to quickly learn mental arithmetic. The questions progress from easy to difficult, allowing primary school students to master knowledge while advancing. (1) The right of the decimal point is (), the counting unit is (); the second position is (), the counting unit is (); the third position is (), the counting unit is ().