14
You had to learn 26 letters to learn
to read and write. Children in China
must learn 3,500 characters.
Count forward and backward by even numbers to 30.
Practice your G and J flash cards for 5 minutes.
Do Speed Drill 14 on page 84.
Record your score in the graph on page 77.
Add to Check Subtraction
Use addition to check subtraction.
Add the two bottom numbers of a subtraction
problem to check it. If you make no mistakes, the sum
will equal the top number of the subtraction problem.
35
23
– 12
+ 12
23
35
difference
sum
62