New
New
Year 5

# Divide a 3-digit number using partitioning and representations (one regroup)

I can divide a 3-digit by a 1-digit number using partitioning and representations (one regroup).

New
New
Year 5

# Divide a 3-digit number using partitioning and representations (one regroup)

I can divide a 3-digit by a 1-digit number using partitioning and representations (one regroup).

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## Lesson details

### Key learning points

1. If the hundreds number is not a multiple of the divisor then the remainder is regrouped for tens.
2. If the tens number is not a multiple of the divisor then the remainder is regrouped for ones.
3. Place value resources can represent the division and the regrouping.

### Common misconception

Pupils may not regroup correctly.

Encourage children to identify what each digit in the dividend represents. Ask, 'Is this digit a multiple of the divisor?'

### Keywords

• Remainder - A remainder is an amount left over after division.

• Partitioning - Partition means splitting a number into parts.

• Regroup / regrouping - The process of unitising and exchanging between place values is known as regrouping.

Provide children with warm up games based on finding multiples or partitioning a 3-digit number into 100s 10s and 1s. Later, the focus would be to select the most helpful partitioning for each division question by finding the largest multiple.
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).

## Starter quiz

### 6 Questions

Q1.
Identify the multiples of 8.
95
17
Q2.
Izzy is working out: 484 ÷ 4. She can skip count in s.
8
6
Q3.
20 tens divided by 5 is tens.
Q4.
If you are dividing each number by 7, which will require regrouping?
70
77
Q5.
Use the partitioning strategy to solve: 54 ÷ 3. Write your answer in numeral form.
Q6.
Use partitioning to solve the word problem : 84 pencils are divided equally between 3 classes. How many pencils does each class get? Write your answer in numeral form.

## Exit quiz

### 6 Questions

Q1.
Which of these numbers is not exactly divisible by 2?
22
30
98
148
Q2.
The __________ is 955, this is the amount we are dividing up.
divisor
quotient
Q3.
If you divisor is 6, which of the numbers will require regrouping?
600