Exploring Tens and Ones in Place Value

Xavier introduces counting numbers between 10 and 19 using blocks. He demonstrates how a group of 10 blocks represents the number 10, and additional blocks represent numbers 11 to 19. Each number is broken down into one group of 10 and extra ones. The video concludes with a practice session to reinforce counting skills.

What does ten ones equal to?

• One group of ten

• Ten groups of one

• One hundred

• Two groups of five

How many extra ones are there in the number 11?

• Two

• One

• None

• Three

What is the number 14 represented as using blocks?

• Fourteen ones

• Two groups of seven

• One group of ten and four extra ones

• One group of ten and three extra ones

How many extra ones make up the number 16?

• Seven

• Four

• Five

• Six

Which number is made up of one group of ten and seven extra ones?

• 15

• 17

• 16

• 18

What does the number 19 consist of?

• Two groups of nine and one extra one

• One group of ten and eight extra ones

• Nineteen ones

• One group of ten and nine extra ones

After the lesson, students are expected to be good at counting numbers in which range?

• In the twenties

• In the teens

• Below ten

• Above twenty