Page 86 - NUMINO_WB_3A
P. 86
047_G3U04_WB_CA_˙—» ¿º 2011.4.5 3:23 PM ˘ ` 8 PDF_In 2540DPI 150LPI T

047-B4-2

2. Find a rule to write the missing numbers.

Example

3,546 2,778
768

3,546-768=2,778

a.

4,657
789

b.

7,734 4,878
c.

6,243 3,429
   81   82   83   84   85   86   87   88   89   90   91