These lessons will help Grade 1 students to understand that the two digits of a two-digit number represent amounts of tens and ones. They will help the kids to understand tens and ones.
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).
Click on the following worksheet to get a printable pdf document.
Understanding Tens And Ones
This video explains the concept of tens and ones. It helps to develop the beginning foundation for place value standard 1.NBT.2 in the Common Core.
Learning Place Value - Tens And Ones (1.NBT.2)
Place Value Grouping Into Bundles
We can teach place value by grouping into bundles of tens. Understanding place value which is essential to know before going into higher math.
Counting to 100 Using a Place Value Chart
Tens And Ones
Count To 100 By Tens
Place Value: Tens And Ones
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