Addition by Regrouping

The video tutorial explores different methods of counting and adding numbers using examples of chicks and rabbits. Sam and Sela demonstrate two different addition methods: Sam uses direct addition, while Sela forms groups of 10 for quicker calculation. The video compares these methods and applies the group of 10 method to another example with rabbits, highlighting the efficiency of forming groups of 10 for addition.

How many chicks does Sam count in total using his method?

• 18

• 16

• 14

• 12

What is the total number of chicks according to Sela's method?

• 18

• 16

• 14

• 12

Which method is quicker for adding numbers, according to the video?

• Neither

• Both are the same

• Sela's method

• Sam's method

How many rabbits are in the first enclosure?

• 7

• 8

• 6

• 5

What is the total number of rabbits after forming a group of 10?

• 13

• 12

• 11

• 14