New
New
Year 5

Multiply a 2-digit number by a 1-digit number using partitioning and representations (two regroups)

I can use partitioning and place value equipment to represent multiplication.

New
New
Year 5

Multiply a 2-digit number by a 1-digit number using partitioning and representations (two regroups)

I can use partitioning and place value equipment to represent multiplication.

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Lesson details

Key learning points

  1. Place value resources can be used to represent multiplication of a 2-digit by a 1-digit number.
  2. Regroup from the ones to the tens if the product of the tens is greater than 10
  3. Regroup from the tens to the hundreds if the product of the tens is greater than 100

Common misconception

Pupils may not regroup correctly.

Encourage pupils to use the stem sentences / array to identify when they may need to regroup.

Keywords

  • Product - The result of two or more numbers multiplied together.

  • Regrouping - The process of unitising and exchanging between place values.

Allow pupils plenty of opportunities to sketch grid models for themselves to represent a range of equations.
Teacher tip

Content guidance

  • Equipment requiring safe usage.

Supervision

Adult supervision recommended.

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).

Video

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6 Questions

Q1.
Lucas is chanting his 3 times tables: 3, 6, 9, What comes next?
10
11
Correct answer: 12
13
Q2.
Which grid model represents the multiplication equation 35 × 3?
pic 1
Correct answer: pic 2
pic 3
Q3.
Which multiplication is represented by the grid model?
An image in a quiz
107 × 4
104 × 7
Correct answer: 17 × 4
7 × 4
Q4.
Aisha is working out 23 × 4. Fill in the gap shown in the grid model.
An image in a quiz
Correct Answer: 8, eight, Eight
Q5.
You are calculating 23 × 4. How many ones will you have altogether?
Correct Answer: 12, twelve, Twelve
Q6.
Look at the grid model. What is the product of 23 × 4?
An image in a quiz
Correct Answer: 92, ninety two, ninety-two, Ninety two, Ninety-two

6 Questions

Q1.
Which grid shows 46 × 4
pic 1
Correct answer: picture 2
picture 3
Q2.
What is the multiplication shown in this grid model?
An image in a quiz
6 × 502
6 × 50
502 × 6
Correct answer: 6 × 52
Q3.
Aisha begins to represent 52 x 5 using grid model. What number is missing?
An image in a quiz
Correct Answer: 25, twenty five, Twenty five, Twenty-five, twenty-five
Q4.
Aisha represents 52 x 5 using grid model. What number is missing?
An image in a quiz
Correct Answer: 10, ten, Ten
Q5.
Match the multiplication with the instances of regrouping.
Correct Answer:35 × 2 ,Regrouping in ones and tens

Regrouping in ones and tens

Correct Answer:43 × 2 ,Regrouping in tens

Regrouping in tens

Correct Answer:14 × 3 ,Regrouping in ones

Regrouping in ones

Q6.
Look at the grid model. What is the product?
An image in a quiz
Correct Answer: 260, Two hundred and sixty, two hundred and sixty, 26 tens

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