➕ 1st Grade Math · Unit 3

Numbers to 120

13 short narrated lessons in 3 chapters, each with pictures, a quiz with a hint and a second try, and an explanation for every answer.

Standards: 1.NBT.A.1 1.NBT.B.2 1.NBT.B.3

1st Grade Math · 7 units
  1. 1Addition and Subtraction Stories
  2. 2Working with Equations
  3. 3Numbers to 120
  4. 4Adding and Subtracting Tens
  5. 5Measurement and Time
  6. 6Data
  7. 7Shapes and Equal Shares
Picture from the lesson “Counting Past 100”
Counting Past 100
Picture from the lesson “Reading and Writing Numbers to 120”
Reading and Writing Numbers to 120
Picture from the lesson “Counting Big Groups by Tens”
Counting Big Groups by Tens

What your child will learn

Counting to 120

  1. Counting Past 100Count forward from any number up to 120.
  2. Reading and Writing Numbers to 120Read and write numbers up to 120.
  3. Counting Big Groups by TensCount large groups of objects by making groups of ten.
  4. Counting to 120 Review ReviewReview counting, reading and writing numbers to 120.

Tens and ones

  1. Ten Ones Make a TenBundle ten ones to make one ten.
  2. Teen NumbersShow numbers 11 to 19 as one ten and some ones.
  3. Counting by TensShow 10, 20, 30 up to 90 as groups of tens and zero ones.
  4. Tens and Ones in Two-Digit NumbersTell how many tens and ones are in a two-digit number.
  5. Tens and Ones Review ReviewReview tens and ones in two-digit numbers.

Comparing numbers

  1. Compare the Tens FirstCompare two-digit numbers by looking at the tens first, then the ones.
  2. Greater Than and Less ThanUse the symbols for greater than, less than and equal to compare numbers.
  3. Putting Numbers in OrderPut three two-digit numbers in order from least to greatest.
  4. Comparing Numbers Review ReviewReview comparing and ordering two-digit numbers.

Try a question from this unit

From the lesson “Counting Past 100”

Boxes show 96, 97, 98, 99 and then a yellow box with a question mark.

What number comes right after 99?

  • [object Object]
  • [object Object]
  • [object Object]
Show the answer

[object Object]. After 99 we reach one hundred, and we write it 100.

Hint kids see after a wrong try: “Think of the big number that comes after all the 90s.”

Key words

  • hundred
  • digit
  • group of ten
  • ten
  • ones
  • teen
  • tens
  • place value
  • compare
  • greater than
  • less than
  • order
← Working with Equations All 1st Grade Math units Adding and Subtracting Tens →

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Narrated lessons, pictures and quizzes for every grade from K to 8. Works offline.

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