LEVEL 4
At Level 4, students practice addition problems that may require carrying, as well as subtraction that
may require regrouping/borrowing. Also, students will work with patterns of numbers, as well as
problems that highlight the inverse relationship between addition and subtraction.

Sublevel 4.1
Students develop speed and accuracy in manipulating numbers up to 100. The problems are designed to
help young minds build an intuitive understanding of the inverse relationship between addition and
subtraction, as well as the ordering of numbers on a number line.

Sublevel 4.2
In this level the students will work with the concept of the inverse relationship between addition and
subtraction while developing speed and accuracy in manipulating numbers up to 100. Further, the
students will develop skills helpful toward visualizing the ordering of numbers in a number line.

Sublevel 4.3
Students review and reinforce their work from earlier sublevels.

Sublevel 4.4
Students review and reinforce their work from earlier sublevels.

Sublevel 4.5
Students add and subtract two-digit numbers up to 100, now incorporating carrying and borrowing.

Sublevel 4.6
Word problems are used to introduce the application of addition and subtraction in a ‘real world”
context.

Final Review & Test
Students will review all the skills covered at this level. After the review process, there will be a
final test to make sure conceptual understanding is developing properly, before moving ahead.