Regroup tens and ones

key notes:

Understanding Place Value:

• Teach students that the value of digits depends on their place in a number (ones, tens, hundreds, etc.).
• The digit in the ones place represents single units, and the digit in the tens place represents groups of 10.

Regrouping Concept:

• Explain that when the number of ones exceeds 9, they can be “regrouped” into tens. For example, 15 ones become 1 group of ten and 5 ones.

Visual Aids:

• Use base-10 blocks, where each “ten” is a rod and each “one” is a unit block. Show how 10 ones can be combined to form one ten.

Examples:

Demonstrate examples like:

• 18 ones = 1 ten and 8 ones.
• 23 ones = 2 tens and 3 ones.
• 35 ones = 3 tens and 5 ones.

Regrouping in Addition:

• Teach how regrouping works in addition. For example, adding 7 ones and 6 ones results in 13 ones, which can be regrouped as 1 ten and 3 ones.

Simple Word Problems:

• Give simple word problems where students must regroup tens and ones, such as “If you have 18 apples and you buy 7 more, how many tens and ones do you have?”

Learn with an example

Let’s practice! 🖊️