In this lesson, students learn to add two two-digit numbers when the process is illustrated in a Place Value Table. The addition is completed using the standard algorithm while each step is illustrated in the table. Students are required to enter each digit in the sum separately, and each digit is evaluated separately.
In this lesson, students add the same range of two-digit numbers without the aid of a Place Value Table. The addition is completed using the standard algorithm, but students only enter the final answer, which is evaluated as a whole.
In this lesson, students learn to add two two-digit numbers that require regrouping. The regrouping is illustrated in a Place Value Table along with the standard algorithm. The student must enter each digit in the sum, as well as the digits above the problem to indicate that a ten is made from ones. Each digit is evaluated separately.
In this lesson, students add two two-digit numbers that require regrouping using the standard algorithm without the aid of a Place Value Table. The student must enter each digit in the sum, as well as the digits above the problem to indicate that a ten is made from ones. Each digit is evaluated separately.
In this lesson, students add two digit numbers, some of which require regrouping and some of which do not. They enter only the sum, which is evaluated as a whole.