Counting Fun: Exploring Numbers 90 to 99

Math Grades 1st Grade 10:44 Video
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Lesson Description

Let's learn about the numbers from 90 to 99! We'll discover how to count them, write them, and understand what they mean using groups of ten and ones.

Video Resource

Learn Grade 1 - Maths - Introducing 90 to 99 | Kids Classroom

KidsClassroom - Nursery Rhymes & Kids Songs

Duration: 10:44
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Key Concepts

  • Counting from 90 to 99
  • Place Value (Tens and Ones)
  • Number Recognition (90-99)

Learning Objectives

  • Students will be able to count forward from 90 to 99.
  • Students will be able to identify and write the numbers from 90 to 99.
  • Students will understand that numbers from 90 to 99 are made of tens and ones.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students if they know how to count to 90. Show the video 'Learn Grade 1 - Maths - Introducing 90 to 99 | Kids Classroom'. Explain that today, we will learn all about the numbers from 90 to 99.
  • Counting with Tens and Ones (10 mins)
    Using blocks, pencils, or other objects, demonstrate how 90 is made up of 9 groups of ten. Then, add one object at a time and count to 99 (91 is 9 groups of ten and 1 one, 92 is 9 groups of ten and 2 ones, etc.).
  • Number Writing Practice (10 mins)
    Give students a worksheet with the numbers 90 to 99 listed in order and out of order. Have them practice writing each number. Also, have them write the number names (ninety, ninety-one, etc.).
  • Ascending and Descending Order (5 mins)
    Practice counting up from 90 to 99 (ascending order) and down from 99 to 90 (descending order). Use the number line as a visual aid.
  • Activity Time! (10 mins)
    Have students use manipulatives to represent numbers between 90 and 99. For example, ask them to show you 95 using ten-sticks and unit cubes. Then, have them write the corresponding number and number name.

Interactive Exercises

  • Number Line Fun
    Create a large number line from 90 to 99 on the floor. Have students take turns hopping to different numbers as you call them out.
  • Tens and Ones Game
    Call out a number between 90 and 99. Students must quickly grab the correct number of ten-sticks and unit cubes to represent that number.

Discussion Questions

  • What does the number 90 mean? How many groups of ten are in it?
  • What is the number after 95? How many tens and ones does it have?
  • Can you think of real-life situations where you might use numbers between 90 and 99?

Skills Developed

  • Counting Skills
  • Number Recognition
  • Place Value Understanding

Multiple Choice Questions

Question 1:

What number comes after 92?

Correct Answer: 93

Question 2:

Which number has 9 tens and 5 ones?

Correct Answer: 95

Question 3:

How many tens are in the number 90?

Correct Answer: 9

Question 4:

What is the biggest number you can make with 9 tens and some ones?

Correct Answer: 99

Question 5:

Which number is smaller, 91 or 98?

Correct Answer: 91

Question 6:

What number comes before 90?

Correct Answer: 89

Question 7:

If you have 9 tens and 3 ones, what number do you have?

Correct Answer: 93

Question 8:

Which number is equal to ninety-seven?

Correct Answer: 97

Question 9:

What number do we say when we have 9 tens and 0 ones?

Correct Answer: Ninety

Question 10:

What number has 9 tens and 1 one?

Correct Answer: 91

Fill in the Blank Questions

Question 1:

The number after 95 is ________.

Correct Answer: 96

Question 2:

99 has 9 tens and ________ ones.

Correct Answer: 9

Question 3:

The number ________ has 9 tens and 0 ones.

Correct Answer: 90

Question 4:

When we count up, it is called ________ order.

Correct Answer: ascending

Question 5:

When we count down, it is called ________ order.

Correct Answer: descending

Question 6:

97 is ninety-________.

Correct Answer: seven

Question 7:

The number before 92 is ________.

Correct Answer: 91

Question 8:

94 has ________ tens and 4 ones.

Correct Answer: 9

Question 9:

93 is ninety-________.

Correct Answer: three

Question 10:

The number with 9 tens and 8 ones is ________.

Correct Answer: 98

Educational Standards

1.NBT.A.1:Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral. 1.NBT.B.2:Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: 1.NBT.B.2.C:The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

Teaching Materials

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