Convert between place values – tens and ones

key notes:

Understanding Place Value:

• Explain that a digit’s value depends on its place (ones, tens).
• The rightmost digit represents ones, and the digit to its left represents tens.

Decomposing Numbers:

• Break numbers into tens and ones (e.g., 34 = 3 tens + 4 ones).
• Practice writing numbers in expanded form, such as 34 = 30 + 4.

Counting by Groups of Ten:

• Demonstrate counting in groups of ten and adding any remaining ones.
• Example: 10, 20, 30, then add ones to reach numbers like 34.

Regrouping Between Tens and Ones:

• Show how 10 ones can be regrouped as 1 ten.
• Practice regrouping exercises such as changing 23 ones to 2 tens and 3 ones.

Manipulatives and Visual Aids:

• Use base-10 blocks, ten-frames, or place value charts to visually demonstrate the concept.
• Drawings of bundles of sticks (10 sticks per bundle) can represent tens, with single sticks as ones.

Conversion Examples:

• Convert numbers between forms, such as:
• “How many tens and ones are in 45?” (Answer: 4 tens and 5 ones)
• “What is 3 tens and 8 ones?” (Answer: 38)

Learn with an example

Let’s practice!🖊️