Have children write and recite the answers to the following equations until they can give the answers instantly.

7+1 or 1+7= ; therefore 8-1= ; 8-7=

6+2 or 2+6= ; therefore 8-2= ; 8-6=

5+3 or 3+5= ; therefore 8-3= ; 8-5=

4+4= ; therefore 8-4=

Follow the step-by-step instructions below to teach the lesson.

Progress to the next lesson when children master the current lesson.

Value mastery over speed of progression.

STEP 1

Have children recite and solve each equation listed below.

STEP 2

Have children copy on paper the equations listed below and their solutions.

EQUATIONS

- 7+1 or 1+7= ; therefore 8-1= ; 8-7=
- 6+2 or 2+6= ; therefore 8-2= ; 8-6=
- 5+3 or 3+5= ; therefore 8-3= ; 8-5=
- 4+4= ; therefore 8-4=

Repeat this lesson every day until children can easily recite and write the equations and their solutions.