Count Tens and Ones

Dive deep into first grade place value by mastering Tens and Ones. This skill teaches students to identify the tens place and the ones place within two-digit numbers. Learners will understand that digits in the tens place represent groups of ten, while digits in the ones place represent individual units. They'll practice decomposing numbers (like recognizing 52 as 5 tens and 2 ones), a key step in building strong number sense and understanding base ten concepts.

• Number Sense and Operations
• Whole Numbers
• Place Value
• Quantities
• Counting Numbers
• Digit
• Tense
• Base-Ten Numerals
• Cardinality
• Number Sense
• Quantity

• 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: a. 10 can be thought of as a bundle of ten ones — called a “ten.” b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones. 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).
• AC9M1N02 — partition one- and two-digit numbers in different ways using physical and virtual materials, including partitioning two-digit numbers into tens and ones
• NY-1.NBT.2
• ZA.CAPS.MATH.G1.NOR.1.5
• ENG-MATH-Y1-NPV.4 — Identify and represent numbers using objects and pictorial representations including the number line, and use the language of: equal to, more than, less than (fewer), most, least.

• Count and Write Numerals

• Model the Same Number in Different Ways
• Identify Numbers Made with Tens

• Identify Standard and Expanded Forms of 2-Digit Numbers
• Subtract Tens
• Round Whole Numbers to the Nearest 10 (up to 100)