Addition & subtraction strategies to solve two-digit equations using an open number line.

Tape Diagrams: 2-Digit Addition and Subtraction | Grade 2 Special | 2m 20s Your child continues to use tape diagrams as a visual tool to solve word problems.

Explains the concept of zero in mathematics, emphasizing its role as a number that represents the empty set. It illustrates how zero is used in addition and subtraction, showing that adding or ...