Identify Numbers Made with Tens

On Iqleel, first-grade students will explore numbers that are made only with tens (10, 20, 30...). They will learn that the number 40 is the same as 4 groups of ten and no ones. This important skill builds a strong foundation for understanding place value and prepares them to work with all 2-Digit Numbers.

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

• 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
• 1.NBT.B.2
• MA.1.NSO.1.3
• SG.MATH.P1.NA.WN.1.2
• 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.

• Model the Same Number in Different Ways
• Count Tens and Ones

• Subtract Tens