🔢 Numbers up to 100

What your child will learn

• Students will be able to count objects up to 100 by grouping them into tens and ones.
• Students will be able to read and write two-digit numerals and number names up to 100.
• Students will be able to write a two-digit number in expanded form and state the place value of each digit.
• Students will be able to compare two two-digit numbers using place value and the symbols >, <, and =.
• Students will be able to arrange up to five two-digit numbers in ascending or descending order.
• Students will be able to identify the number that comes before, after, or between given numbers up to 100.
• Students will be able to classify numbers up to 100 as odd or even based on the ones digit.

Lessons in this unit

1. Tens and Ones: Group objects into tens and ones to count up to 100. Use bundles of 10 straws and loose ones. Represent numbers with base-10 blocks and a place value chart (T O).
2. Number Names to 100: Read and write number names for numbers up to 100. Practice numbers with special names like 11, 12, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100.
3. Expanded Form and Place Value: Write a two-digit number as the sum of its tens and ones (47 = 40 + 7). State the value of each digit.
4. Comparing Numbers: Compare two two-digit numbers using place value. Use symbols >, <, and =. Start by comparing tens, then ones.
5. Ordering Numbers: Arrange numbers in ascending (smallest to biggest) and descending (biggest to smallest) order. Use place value to compare and sequence.
6. Before, After, and Between: Identify the number that comes before, after, or between given numbers. Understand that 'before' means one less, 'after' means one more, and 'between' means in the middle.
7. Odd and Even Numbers: Identify odd and even numbers up to 100 by looking at the ones digit. Understand that even numbers can be paired, odd numbers have one left over.

Key words

tens

Groups of ten things. Ten ones make one ten.

ones

Single things that are not in a group of ten.

place value

What a digit is worth because of where it sits: tens or ones.

expanded form

A number split into its parts, like 47 = 40 + 7.

greater than

Bigger than. The wide open side of the sign faces the bigger number.

less than

Smaller than. The pointy side of the sign points to the smaller number.

ascending order

From smallest to biggest, like climbing stairs.

descending order

From biggest to smallest, like coming down stairs.

before

The number that comes just before another number (one less).

after

The number that comes just after another number (one more).

between

The number that is in the middle of two other numbers.

odd

A number that cannot be split into two equal groups. It has 1, 3, 5, 7, or 9 in the ones place.

Help your child at home

What to watch for

47 is 'four and seven' instead of 'forty-seven'.

Help: Use the place value chart: 4 tens means 40, so 4 tens and 7 ones is forty-seven.

Writing 'fourty' instead of 'forty'.

Help: Memorize the spelling: forty (no 'u').

The value of the digit 4 in 47 is 4, not 40.

Help: Use blocks: 4 ten-rods are 40. So the 4 is worth 40.

47 > 52 because 7 > 2 (comparing ones first).

Help: Always compare tens first. 4 tens is less than 5 tens, so 47 < 52.

Try this at home

• Group a set of objects into tens and ones and count
• Match numeral to number name
• Write expanded form for a given number
• Compare two numbers using place value chart

Quick questions to ask aloud

1. Riya has 3 bundles of 10 straws and 5 loose straws. How many straws does she have? (35 / 53 / 8)
   Show answer

   3 bundles of 10 is 30. 30 and 5 more is 35.
2. What is the number name for 47? (forty-seven / fourty-seven / forty-seventeen)
   Show answer

   47 is forty-seven. Remember: forty has no 'u'.
3. What is the expanded form of 47? (40 + 7 / 4 + 7 / 40 + 70)
   Show answer

   47 has 4 tens (40) and 7 ones (7). So 47 = 40 + 7.

Parent guide: how to help your child with Class 2 Maths

Free printable charts

• Number Names 1–100: Every number from 1 to 100 in English and Hindi, with अंक. (Class 1–2 · ages 6–8, free PDF)

All free printable charts

Frequently asked questions

What will my child learn in "Numbers up to 100" (Class 2 Maths)?

Your child will be able to: count objects up to 100 by grouping them into tens and ones.; read and write two-digit numerals and number names up to 100.; write a two-digit number in expanded form and state the place value of each digit.; compare two two-digit numbers using place value and the symbols >, <, and =.; arrange up to five two-digit numbers in ascending or descending order.; identify the number that comes before, after, or between given numbers up to 100.; classify numbers up to 100 as odd or even based on the ones digit..

How does MangoMindz teach "Numbers up to 100"?

In 7 short parts (Tens and Ones, Number Names to 100, Expanded Form and Place Value, Comparing Numbers, Ordering Numbers, Before, After, and Between, Odd and Even Numbers). Each part has a picture-based lesson read aloud by Mango Teacher, a quick check, and a quiz built from common mistakes children make, with Mango, a study buddy, for questions.

How long does "Numbers up to 100" take?

About 120 minutes in total, spread over 7 parts of 15–25 minutes each.

How can I help my child with "Numbers up to 100" at home?

Work through a small example together, such as: Group a set of objects into tens and ones and count; Match numeral to number name. Then ask a quick question aloud: Riya has 3 bundles of 10 straws and 5 loose straws. How many straws does she have? (35 / 53 / 8)

What mistakes do children often make in "Numbers up to 100"?

47 is 'four and seven' instead of 'forty-seven'. Fix: Use the place value chart: 4 tens means 40, so 4 tens and 7 ones is forty-seven. Writing 'fourty' instead of 'forty'. Fix: Memorize the spelling: forty (no 'u'). The value of the digit 4 in 47 is 4, not 40. Fix: Use blocks: 4 ten-rods are 40. So the 4 is worth 40.

Is "Numbers up to 100" free on MangoMindz?

Yes. Every lesson part and quiz in "Numbers up to 100" is free on MangoMindz, with no ads.