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.

Lesson details

Key learning points

  1. Two-digit numbers can be partitioned into tens and ones.
  2. The order of the digits indicates their value.

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.

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.

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).

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6 Questions

Q1.
Which of the following bar models represents 62?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
Q2.
If we combine the parts, what will the whole amount be?
An image in a quiz
Correct answer: 46 p
64 p
10p
Q3.
What is the missing part in the part-part-whole model?
An image in a quiz
Correct Answer: 1, one
Q4.
What is the missing part in the bar model?
An image in a quiz
Correct Answer: 60, 6 tens
Q5.
Each number has been partitioned into tens and ones. Which number has been partitioned correctly?
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
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.
Correct answer: Seven 1 p coins and four 10 p coins.

6 Questions

Q1.
If we combine the parts, what will the whole amount be?
An image in a quiz
12
48
Correct answer: 84
Q2.
Which of the following part-part-whole models represents 56?
An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
Q3.
What is the missing part in the bar model?
An image in a quiz
Correct Answer: 70, seventy
Q4.
35 has been partitioned into tens and ones. What is the missing number? 35 can be partitioned into ___ and 5
Correct Answer: 30, 3 tens
Q5.
What is the missing part in the part-part-whole model?
An image in a quiz
Correct Answer: 8, 8 ones
Q6.
Which bar model shows 52 partitioned correctly?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz