New
New
Year 2
Partition two-digit numbers into tens and ones
I can represent and interpret the structure of two-digit numbers on part-part-whole and bar models.
New
New
Year 2
Partition two-digit numbers into tens and ones
I can represent and interpret the structure of two-digit numbers on part-part-whole and bar models.
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Lesson details
Key learning points
- Two-digit numbers can be partitioned into tens and ones.
- The order of the digits indicates their value.
Keywords
Partition - To split a whole up into parts.
Combine - To put parts together to make a whole.
Part - A piece or section of a whole.
Whole - All of something; complete.
Common misconception
Children may reverse the digits in a two-digit number, not understanding the value of each digit, or partition, for example, 54 into 5 and 4
Return to the use of practical equipment and ask children to prove they are right using it. They could also explain their ideas to a friend to encourage them to spot their own errors.
Display stem sentences and use them routinely to articulate their thinking, particularly with regard to the value of each digit. Present part-part-whole models in a range of orientations so that children understand the structure of the model and how that relates to the numbers used.
Teacher tip
Licence
This content is © Oak National Academy Limited (2024), licensed on
Open Government Licence version 3.0
except where otherwise stated. See Oak's terms & conditions (Collection 2).Lesson video
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Starter quiz
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6 Questions
Q1.
Which of the following bar models represents 62?
Q2.
If we combine the parts, what will the whole amount be?
64 p
10p
Q3.
What is the missing part in the part-part-whole model?
Q4.
What is the missing part in the bar model?
Q5.
Each number has been partitioned into tens and ones. Which number has been partitioned correctly?
Q6.
Lucas has some 10 p and some 1 p coins in his pocket. Altogether, he has 47 p in his pocket. How many of each coin does he have?
Seven 10 p coins and four 1p coins.
Four 10 p coins and four 1 p coins.
Exit quiz
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6 Questions
Q1.
If we combine the parts, what will the whole amount be?
12
48
Q2.
Which of the following part-part-whole models represents 56?
Q3.
What is the missing part in the bar model?
Q4.
35 has been partitioned into tens and ones. What is the missing number? 35 can be partitioned into ___ and 5
Q5.
What is the missing part in the part-part-whole model?
Q6.
Which bar model shows 52 partitioned correctly?
